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Alphabetical index of all organisations, international groups, publications and people in the archive.
Use the tabs below to show the index for each entry type.
You can also browse organisations in our timeline of the Irish left.
1
3
A
- Abbott, Willie
- Abortion
- Abortion (exclusion of suicide) referendum, 2002
- Abortion (travel, information) referenda, 1992
- Adam, Eve
- Adams, Gerry
- Advance
- Ainriail [Belfast]
- Ainriail [Galway]
- Allen, Kieran
- Allen, Robert
- Alonso, Rogelio
- Amalgamated Transport and General Workers Union
(ATGWU)
- An Caorthann
- An Eochair
- An Phoblacht
- An Phoblacht Abú
- An Phoblacht [IRF]
- An Rabharta Glas - Green Left
(ARG-GL)
- An Reabhloid
- An Solas
- An Spréach
- An t-Ógláċ
- An Taisce
- An tÓglách
- Anarchist Bookshop Collective
- Anarchist Federation in Ireland
(AFI)
- Anarchist News
- Anarchist Worker
- Anarchist Workers Alliance
- Anarchy
- Anglo-Irish Agreement, 1985
- Anti-Austerity Alliance
(AAA)
- Anti-Austerity Alliance - People Before Profit
(AAA-PBP)
- Anti-Bin Tax Campaign
- Anti-Fascist Action
(AFA)
- Anti-Imperialist Action Ireland
(AIA)
- Archbold, Brendan
- Asmal, Kader
- Asmal, Louise
- Association of Scientific, Technical and Managerial Staffs
(ASTMS)
- Athol Books
- Aubane Historical Society
- Aughey, Arthur
B
- Bains, Hardial
- Baker, Paul
- Ballymena Anarchist Group
- Ballymun Echo
- Ballymun News
- Bambery, Chris
- Banshee
- Baoill, Art Ó
- Barnsley Women Against Pit Closures
Britain
- Barrett, Richard Boyd
- Barrington, Bernadette
- Barry, John
- Barry, Mick
- Basketter, Simon
- Behan, Blathnaid
- Behan, Dominic
- Belfast Anarchist Collective
- Belfast Outdoor Relief Strike, 1932
- Belfast Socialist Group
- Belfast Women's Collective
- Bell, Geoff
- Bennett, Jack
- Berman, David
- Bew, Paul
- Big Flame
Britain
- Birch, Reg
- Black and Red Press
USA
- Blake, Alice
- Bleakley, David
- Bloody Sunday, 1972
- Boland, Eavan
- Bolger, Paddy
- Booth, Arthur
- Boserup, Anders
- Boucher, Dermot
- Bowman, Paul
- Boyd, Andrew
- Boyer, Sandy
- Brádaigh, Ruairí Ó
- Brádaigh, Ruairí Óg Ó
- Brádaigh, Seán Ó
- Brady, Joan
- Brady, Ronan
- Breathnach, Colm
- Breathnach, Deasún
- Breathnach, Prionsias
- Brennan, Aynia
- Brennan, Paul
- Brighton Women and Ireland Group
Britain
- British and Irish Communist Organisation
(BICO)
- Broin, Eoin Ó
- Broughan, Tommy
- Browne, Harry
- Browne, Noël
- Browne, Peter
- Bruce, Alan
- Burca, Máirín de
- Burke, Mick
- Burton, Joan
- Byrne, Dermot
- Byrne, Patrick
- Byrne, Peter
C
- Cahill, Joe
- Callender, Rosheen
- Campaign for an Independent Left
- Campaign for Labour Representation
- Campbell, Patricia
- Cane, John
- Caomhánaigh, C. Ó
- Caomhanaigh, Séamus Ó
- Carlin, David
- Carmody, Paddy
- Carnsore Point Campaign
- Carolan, Mary
- Carr, Alan
- Carroll, Pat
- Catalyst
- Catalyst [SA]
- Cathasaigh, Aindrias Ó
- Catney, Tony
- Ceallaigh, Daltún Ó
- Central Citizens Defence Committee
(CCDC)
- Church and State
- Cionnaith, Sean Ó
- Citizenship Referendum, 2004
- Clan na Gael & IRA Veterans of America, Inc.
USA
- Clann na hÉireann
Britain
- Clarke, Jacqueline
- Class Struggle
- Class War
- Class War
- Clifford, Angela
- Clifford, Brendan
- Coakley, Maurice
- Coileáin, Liam Ó
- Cole, Roger
- Collins, Dave
- Collins, Joan
- Comhairle Uladh
- Comment
- Committee for a Marxist International
- Committee for a Workers' International
(CWI)
- Committee for a Workers International [Majority]
- Committee for a Workers' International [Refounded]
(CWI)
- Committee for the Rights of Travellers
- Common Market Study Group
- Communist Comment
- Communist Federation of Britain (Marxist-Leninist)
Britain
- Communist Formation
Britain
- Communist International
(Comintern)
- Communist Organisation in the British Isles
(COBI)
Britain
- Communist Party of Britain (Marxist-Leninist)
(CPB-ML)
Britain
- Communist Party of Great Britain
(CPGB)
Britain
- Communist Party of Great Britain (Leninist grouping)
Britain
- Communist Party of Great Britain (Provisional Central Committee)
Britain
- Communist Party of Ireland
(CPI)
- Communist Party of Ireland [1921]
- Communist Party of Ireland (Marxist-Leninist)
(CPI(ML))
- Communist Party of Northern Ireland
(CPNI)
- Communist Youth Union of Ireland (Marxist-Leninist)
- Community and Workers' Action Group
- Congress '86
- Connaughton, Maeve
- Connolly Association
Britain
- Connolly, Dermot
- Connolly Youth Movement
- Conroy, Caroline
- Conroy, Joe
- Conroy, John
- Contraception
- Conway, Anne
- Conway, James
- Coppinger, Ruth
- Corish, Brendan
- Cork Communist Organisation
(CCO)
- Cork Socialist Party
- Cork Unemployed Action Group
- Cork Workers' Club
- Corrigan, Sue
- Costello, Joe
- Costello, Seamus
- Coulter, C.
- Cox, Laurence
- Craig, Carole
- Craig, Joe
- Crean, Tom
- Cronin, Deirdre
- Cronin, Michael
- Cronin, Sean
- Cross-Community Labour Alternative
- Crossey, Ciaran
- Cuba Support Group Ireland
- Cuba Today
- Curry, Seán
- CWI Ireland
D
- Dalton, Rita
- Daly, Clare
- Daly, Miriam
- Daufouy, Philippe
- Davies, P.
- Davison, Madge
- Dawn Group
- Dawn Magazine
- Deasy, Joseph
- Delaney, Sean
- Democratic Left
- Democratic Socialist Party
(DSP)
- Democratic Student Front
- Denis, Gary
- Derry Labour Party
- Derwin, Des
- Dessau, Heinz
- Devine, Francis
- Devlin, Bernadette
- DiEM25
- Dillon, Siobhán
- Diskin, Mary
- Divorce
- Divorce Referendum, 1986
- Divorce Referendum, 1995
- Doherty, Pat
- Doherty, Vincent
- Donaghy, Christine
- Donnelly, Francie
- Donnelly, Pat
- Donoghue, Brendan
- Dooney, Triona
- Dorn, Robert
- Douthwaite, Richard
- Dowling, Éanna
- Downing Street Declaration, 1993
- Doyle, Kevin
- Doyle, Mick
- Doyle, Peigin
- Drisceoil, Prionsias Ó
- Dublin '68 Committee
- Dublin Anarchist Collective
- Dublin Anarchist Group
- Dublin Council of Trade Unions
(DCTU)
- Dublin H-Block Armagh Committee
- Dublin Housing Action Committee
- Dublin Spartacist Group
- Dublin West Independent Labour News
- Duffy, Joe
- Dunne, T.
- Dunnes Stores Anti-Apartheid Strike
- Dunphy, Richard
- Dutt, R. Palme
- Dwyer, Tom
E
- Eagleton, Terry
- Ecology Party
- Eighth Amendment (Right to life) Referendum, 1983
- Éire Nua
- Éirígí
- Ellis, Peter Berresford
- Environment
- European Anti-Capitalist Left
(EACL)
- European Communities Membership Referendum, 1972
- European Green Party
(EGP)
- European Monetary Union
- European Parliament Election, 1984
- European Parliament Election, 1989
- European Parliament Election, 1999
- European Union (EEC, EC, EU)
- European United Left–Nordic Green Left
(GUE/NGL)
- Evason, Eileen
- Extinction Rebellion
(XR)
F
- Fabian Society
Britain
- Falls Curfew, 1970
- Farrell, Clare
- Farrell, Emmet
- Farrell, Michael
- Farrell, Mike
- Faulkner, Jim
- Fearghail, Seán Óg Ó
- Federation of Young European Greens
- Feeney, John
- Fennell, Desmond
- Fianna Éireann
- Fightback
- Fightback [IMT]
- Fine Gael
- Finlay, Fergus
- Finn, Daniel
- Fís Nua
- Fitzgerald, Peter
- FitzPatrick, Denis
- Flood, Andrew
- Flood, J.
- Flynn, Gerry
- Flynn, Hugh
- Flynn, Rosanna
- Focalín
- Focus
- Foley, Conor
- Foley, Gerry
- Forde, Neil
- Fortnight
- Forum
- Forward
- Fourth International
(FI)
- Fourth International [Reunified]
- Fourthwrite
- Fownes Street Journal
- Fox, Mary
- Freedom
- Freedom News
- Freedom Press
Britain
- Friends of the Union
Britain
- Frontline Collective
- Frow, Edmund
- Frow, Ruth
- Furey, Kieran
- Furlong, Áine
G
- Gabhann, Eibhlín Ní
- Gallagher, James
- Gallagher, Maureen
- Galway Worker
- Garland, Seán
- Gavan, Paul
- Gay Community News
- General Election, 1977
- General Election, 1981
- General Election, 1987
- General Election, 1989
- General Election, 1997
- General Election, 2007
- General Election, February 1982
- General Election, November 1982
- Geraghty, Des
- Gerhardt, Paul
- Ghoill, Martin Mac An
- Gibbons, Luke
- Gibbons, Marion
- Gibney, Dave
- Gilbert, Simon
- Gillan, Paddy
- Gillespie, Paul
- Gilmore, Eamon
- Gilmore, George
- Glaser-Baur, Herman
- Glennon, Mags
- Global Ecosocialist Network
(GEN)
- Global Greens
- Gluaiseacht
- Gogan, Johnny
- Gogarty, Frank
- Goldring, Maurice
- Good Friday Agreement Referendum, 1998
- Goodwillie, John
- Gordon, Mary
- Gorman, Tommy
- Gormley, John
- Goulding, Cathal
- Graham, Alistair
- Gralton
- Grant, Ted
- Grapevine
- Gray, John
- Greaves, C. Desmond
- Greaves, Desmond
- Green Alliance
- Green, Clare
- Green, Marion
- Green Party
- Green Party in Northern Ireland
- Greens–European Free Alliance
- Gregory, Tony
- Grille
- Ground Rent
H
- Hadden, Peter
- Haines, Lila
- Hall, Stuart
- Halligan, Brendan
- Hamill, Nora
- Hamilton, Billy
- Hamilton, Martin
- Hanahoe, Tom
- Hands Off Ireland!
- Hanley, Brian
- Harnett, Niall
- Harrington, Joe
- Harris, Eoghan
- Harris, Noel
- Harrison, Brendan
- Hartnett, Barney
- Hayden, Stephen
- Hayes, Mark
- Hayes, Sean
- Hayes, Tom
- Hazelkorn, Ellen
- Healy, Paddy
- Healy, Seamus
- Hearne, Rory
- Heatley, Robert W.
- Hegarty, Patricia
- Henskeagh, Reuben
- Heron, Brian
- Hewitt, Mark
- Hibernia
- Hickey, Margaret
- Higgins, Joe
- Higgins, Michael D.
- Hill, G.
- Hobsbawm, Eric
- Hope, James
- Hope, Jemmy
- Hopkins, Stephen
- Horgan, Goretti
- Horgan, John
- Housing and Homelessness
- Hughes, Aiden
- Hughes, Brendan
- Hunger Strike Bulletin
- Hunger Strikes, 1981
- Hunt, Peter
- Hunter, W.
- Hurley, Paul
- Hussey, Matthew
- Hynds, Imelda
I
J
K
- Kallen, Jeff
- Kallen, Molly
- Kaur, Prunella
- Kavanagh, Art
- Kavanagh, Bob
- Keane, Denis
- Keating, Niav
- Keenan, Joe
- Keenan, Margaret
- Kelleher, Derry
- Kelleher, Terry
- Kelly, Brendan
- Kelly, Jimmy
- Kelly, Joan
- Kelly, Nicky
- Kelly, Phelim
- Kelly, Sean
- Kemmy, Jim
- Kennedy, Lorraine
- Kent, Gary
- Kerr, Gregor
- Kerr, Jim
- Kerrigan, Gene
- Kiberd, Damien
- Kildare 6 Defence Committee
- Kilmartin, Brian
- King, Tarka
- Kirby, Peadar
- Kostick, Conor
L
- Labour
- Labour
- Labour '87
- Labour and Socialist International
- Labour & Trade Union Coordinating Group
- Labour & Trade Union Group
- Labour Coalition
- Labour History News
- Labour Left
- Labour Left
- Labour News Bulletin
- Labour Party [Britain]
Britain
- Labour Party in Northern Ireland
- Labour Party of Northern Ireland
(LPNI)
- Labour Party of Northern Ireland [1998]
(LPNI)
- Labour Party Young Socialists
Britain
- Labour Youth
- Landy, David
- Lane, Fintan
- Lane, Jack
- Lane, Jim
- Larkin, Denis
- Larragy, James
- Lasair Dhearg
- Lawless, Gery
- Lawlor, Chris
- League for a Workers Republic
(LWR)
- League for a Workers' Vanguard
(LWV)
- League for the Fifth International
(L5I)
- League of Communist Republicans
- Lee, Dave
- Left Alliance
- Left Forum
- Left Perspectives
- Left Republican Review
- Left Revolutionary Group
- Left Tribune
- Left Unity
- Leftline
- Lewis, Stephen
- Liaison Committee of the Labour Left
- Liberty News
- Lieshout, Mary Van
- Limerick Socialist
- Limerick Socialist Organisation
(LSO)
- Limerick Soviet, 1919
- Lisbon Treaty Referendum, 2008
- Little, Paul
- Lloyd, David
- Lloyd, John
- Local Elections, 1930
- Local Elections, 1967
- Local Elections, 1979
- Local Elections, 1991
- Local Elections (Northern Ireland), 1993
- Lowry, John
- Lucy, Gordon
- Lynch, Conor
- Lynch, Kathleen
- Lynch, Seamus
- Lyons, J.
- Lysaght, D. R. O'Connor
- Lysaght, Rayner
M
- Maastricht Treaty Referendum, 1992
- MacAonghusa, Proinsias
- MacCriath, Aindrias
- MacDara, Dara
- MacDiarmada, Mairtín
- MacDonogh, Pat
- MacDowell, Vincent
- MacEoin, Art
- MacGiolla, Tomás
- MacMahon, Mary
- MacMaolain, Liam
- MacNamidhe, Ciarán
- MacNeill, Dara
- MacNeill, Ruaidhri
- MacSimóin, Alan
- MacSté, Pól
- MacThomáis, Eamonn
- MacThomas, Hilda
- Madden, Jack
- Magee, John
- Magennis, Eoin
- Maguire, F.J.
- Maguire, Manus
- Maher, Mary
- Mair, Peter
- Making Sense
- Malone, Deirdre
- Mansfield, Peter
- Marie and Noel Murray Case
- Marmion, Sean
- Martin, Moira
- Martin, Noel
- Marxism Today
- Marxist Forum
- Marxist-Leninist Journal
- Marxist Leninist Quarterly
- Marxist-Leninist Weekly
- Marxist Review
- Matgamna, Seán
- Maxton, Hugh
- McAliskey, Bernadette
- McAnulty, John
- McAuley, Frances
- McCabe, Anton
- McCamley, John
- McCann, Eamonn
- McCann, Ellen
- McCann, Joe
- McCarron, Des
- McCartan, Pat
- McCarthy, Dec
- McCarthy, Paul
- McClelland, Maureen
- McCormack, Owen
- McCullough, W. H.
- McDermott, Derry
- McDermott, Eilish
- McDermott, Peter
- McDonagh, Dave
- McDonald, Henry
- McDonald, Joe
- McDonnell, John
- McGirl, John Joe
- McGrath, Sean
- McGuinness, Martin
- McGuinness, Shiela
- McGurran, Malachy
- McInerney, Maura
- McInerney, Michael
- McIntyre, Anthony
- McKearney, Tommy
- McKenna, Patricia
- McKenna, Pearse
- McLaughlin, Kevin
- McLaughlin, Mitchel
- McLean, Ian
- McLennan, Gordon
- McLoone, Martin
- McLoughlin, Kevin
- McLoughlin, Michael
- McLoughlin, Mick
- McMahon, Mary
- McManus, Liz
- McManus, Seán
- McMillen, Billy
- McMillen, Liam
- McNamara, Jim
- McVeigh, Robbie
- McVerry, Peter
- McWilliams, Edward
- Meehan, John
- Merrigan, Matt
- Mhuirí, Pádraigín Ní
- Michail, Loizos
- Militant
- Militant
- Militant Labour
- Militant Left
- Millar, Scott
- Miller, Mike
- Milotte, Mike
- Mitchell, Billy
- Moloney, Paul
- Molyneux, John
- Monaghan, James
- Mongain, Séamus Ó
- Montagu, Ivor
- Montague, Pat
- Monteagudo, Graciela
- Montgomery, John
- Mooney, Máirín
- Moore, Linda
- Morgan, Austen
- Moriarty, Therese
- Morrison, Danny
- Morrison, Eve
- Morton, Bruce
- Movement for a Revolutionary Communist International
- Movement for a Socialist Republic
- Moynagh, James
- Muircheartaigh, Antóin Ó
- Mulholland, Ciarán
- Mulholland, John
- Mulholland, Niall
- Mulrooney, Gretta
- Murchú, Eoin Ó
- Murphy, Conor
- Murphy, Seamus
- Murray Defence Committee
- Murray, Kevin
- Murray, Seán
- Musicians’ Union of Ireland
(MUI)
N
- National Animal Rights Association
(NARA)
- National Association for Irish Justice
USA
- National College of Art Students Union
(NCAD SU)
- National Democratic Party
(NDP)
- National Federation of Shop Stewards and Rank and File Committees
- National Graves Association
(NGA)
- National H-Block / Armagh Committee
- National Labour Party
- National Party
- National Political Front
- National Progressive Democrats
- National Union of Mineworkers
(NUM)
Britain
- National Wages Agreements, 1970s
- Natural Resources
- Necessity for Change Institute of Anti-Imperialist Studies
- Neligan, Dave
- Nevin, E. T.
- New Agenda
- New Books Publications
- New Communist Party
Britain
- New Earth
- New Ireland Forum
- New Left Journal
- New Republican Forum
- Newtownabbey Labour Party
- Nice Treaty Referendum, 2001
- Nicky Kelly Campaign
- Nixon, John
- No Quarter
- Nolan, Dermot
- Nolan, Sam
- Nolan, Seán
- North, John
- Northern Ireland Assembly Election, 1982
- Northern Ireland Assembly Election, 2003
- Northern Ireland Assembly Election, 2007
- Northern Ireland Civil Rights Association
(NICRA)
- Northern Ireland Consititutional Convention, 1975
- Northern Ireland Framework Documents, 1995
- Northern Ireland Labour Party
(NILP)
- Northern Ireland Report
- Northern Ireland Socialist Research Centre
- Northern Ireland Women's Rights Movement
(NIWRM)
- Northern Ireland Young Communist League
- Northwest Labour Publications
- Notes and Comments
- Nuclear Energy
O
- O’Reilly, Gerald
- O'Brien, Eamonn
- O'Brien, Paul
- O'Carroll, Aileen
- O'Comain, Liam
- O'Connell, Deirdre
- O'Connor, Claire
- O'Connor, Emmet
- O'Connor, Louise
- O'Connor, Orla
- O'Connor, Pat
- O'Connor, Philip
- O'Connor, Tom
- O'Doherty, Malachi
- O'Donnell, Peadar
- O'Duffy, Molly
- O'Farrell, Con
- Official Republican Movement
(ORM)
- Official Sinn Féin - IRSP Split, 1974
- Ógra Shinn Féin
- O'Grady, Peadar
- O'Hagan, Des
- O'Hara, Sarah
- O'Hare, Sean
- O'Leary, John
- O'Leary, Margaret
- O'Leary, Michael
- O'Loughlin, Fiona
- O'Mahony, Rose
- O'Malley, Chris
- O'Meara, Kathleen
- O'Neill, Eoghain
- O'Neill, John
- O'Neill, Sadhbh
- O'Quigley, Gerard
- O'Reilly, Gerald
- Organise!
- Organise! Anarcho-Syndicalist Federation
(OASF)
- Organise! (Solidarity Federation)
- Organising Committee for the Reconstruction of the Fourth International
- O'Riordan, Manus
- O'Riordan, Michael
- O'Rourke, Lily
- O'Ruairc, Liam
- O'Ryan, Cormac
P
- Palmer, G.
- Palmer, John
- Party of European Socialists
(PES)
- Patsy O'Hara Youth Movement
- Patterson, Henry
- Pavee
- Peace and Neutrality Alliance
(PANA)
- Pentel, Sue
- People Before Profit
(PBP)
- People's Democracy
- People's Movement
- People's Voice
- Perry, Cieran
- Pinter, Mike
- Poblacht na nOibrithe
- Postworker Bulletin
- Price, Marian
- Prisoners Rights
- Prisoners' Rights Organisation
- Progressive Alliance
- Progressive Alliance of Socialists and Democrats
(S&D)
- Progressive International
- Progressive Unionist Party
(PUP)
- Proletarian [COBI]
- Proportional Representation Referendum, 1968
- Provisional Sinn Féin
(PSF)
- Purcell, Bettty
- Purdie, Bob
- Purser, Vasco
- Purvis, Dawn
Q
R
- Rabbitte, Pat
- Raftery, A.
- Rebel
- Reclaim the Agenda
(RTA)
- Red Action
- Red Action
- Red Action [Britain]
Britain
- Red & Black Revolution
- Red Banner
- Red Banner [ISLI]
- Red Network
- Red Patriot
- Red Republican Party
- Redlich, Patricia
- Redmond, Seán
- Redmond, Tom
- Religion, Church and State
- Repeal of the Eighth Amendment Referendum, 2018
- Repsol
- Repsol Pamphlets
- Republican Bulletin
- Republican Clubs
- Republican Congress
- Republican Labour Party
(RLP)
- Republican Network for Unity
- Republican News
- Republican Sinn Féin
(RSF)
- Republican Socialist Youth Movement
(RSYM)
- Republican Worker
- Republican Worker Tendency
- Resistance [CPGB]
- Resistance [ISN]
- Resistance [URC]
- Resources Protection Campaign
(RPC)
- Resources Study Group
- Revolutionary Anarcha-Feminist Group
(RAG)
- Revolutionary Communist Group
(RCG)
Britain
- Revolutionary Communist League of Britain
Britain
- Revolutionary Communist Party
(RCP)
Britain
- Revolutionary Communist Tendency
Britain
- Revolutionary History
- Revolutionary Marxist Group
- Revolutionary Struggle
- Revolutionary Workers' Groups
(RWG)
- Riain, Seán Ó
- Richardson, Sue
- Riddy, John
- Rigal, Jocelyne
- Right to Change
(RTOC)
- Right2Change
(R2C)
- Right2Water
(R2W)
- Ripening of Time Collective
- RISE
- Rı́ordáin, Aodhán Ó
- Robinson, Meg
- Rock, Hilary
- Rolston, Bill
- Rosc Catha
- Rosenstock, Gabriel
- Ross, Fearghal
- Rossa, Proinsias De
- Roulston, Carmel
- Rourke, Peter O'
- Ruddock, Joe
- Rush, Elaine
- Ryan, Brendan
S
- Sallins Train robbery
- Saoirse
- Saor Éire
- Saor Éire [Cork]
- Saoradh
- Sargent, Trevor
- Savage, Jim
- Savin, Jerome
- Scéim na gCeardchumann
- Scott, Brendan
- Second International
- Section 31 of the Broadcasting Act
- Shankill Bulletin
- Shankill Education Workshop
- Shankill Think Tank
- Shannon Airport (Military Use)
- Share the Wealth Campaign
- Sheehan, Helena
- Sheehan, Maurice
- Sheehy-Skeffington, Hanna
- Shell to Sea
- Sherlock, Joe
- Sinclair, Betty
- Single European Act Referendum, 1987
- Sinn Féin
- Sinn Féin [Official]
- Sinn Féin [Pre 1970]
- Sinn Féin Republican Youth
- Sinn Féin Split, 1969
- Sinn Féin The Workers' Party
(SFWP)
- Siomóin, Tomás Mac
- SIPTU Fightback
- Sligo/Leitrim Independent Socialist Organisation
- Smullen, Eamonn
- Smyth, Kevin
- Smyth, Paddy
- Social Democratic and Labour Party
(SDLP)
- Social Democrats
- Social Partnership
- Socialism 2000
- Socialist Alternative
- Socialist Democracy
- Socialist Digest
- Socialist Environmental Alliance
(SEA)
- Socialist International
(SI)
- Socialist Labour Action Group
- Socialist Labour Alliance
- Socialist Labour League
Britain
- Socialist Labour Party
(SLP)
- Socialist Organiser Alliance
Britain
- Socialist Party
- Socialist Party of Great Britain
(SPGB)
Britain
- Socialist Party of Ireland [1909]
- Socialist Party of Ireland [1949]
- Socialist Party of Ireland [1971]
(SPI)
- Socialist Party Youth
- Socialist Platform
Britain
- Socialist Republic
- Socialist Republican
- Socialist Republican Collective
- Socialist Republican Party
- Socialist Review Group
(SRG)
Britain
- Socialist Revolutionary Group of Ireland
(SRGI)
- Socialist Women's Group
(SWG)
- Socialist Worker
- Socialist Worker Review
- Socialist Workers' Movement
(SWM)
- Socialist Workers' Network
(SWN)
- Socialist Workers' Party
(SWP)
- Socialist Workers' Party [UK]
(SWP)
Britain
- Socialist Workers' Tendency
- Socialists Against Nationalism
- Solidarity
- Solidarity - People Before Profit
- Solomon, Lin
- Sound Post
- Spark
- Spartacist Group of Ireland
- Spartacist Ireland
- Spartacist League
Britain
- Spectre
- Speed, Anne
- Spray, Glen
- Squatter
- Stagg, Emmet
- Stanley, Nigel
- Stevens, Helena
- Stewart, Edwina
- Stewart, James
- Straeten, Serge Van der
- Subversion
Britain
- Sullivan, John
- Sullivan, Rosemary
- Sunningdale Agreement, 1973
- SuperSpi
- Sweeney, Paul
- Swift, John
- Syndicalist Solidarity Network
T
- Taaffe, Peter
- Tallaght Committee to Support Mine Workers
- Tallion, Ruth
- Teoiric
- The Blanket
- The Bottom Dog
- The Captive Voice
- The Club
Britain
- The Communist
- The Internationalists
- The Irish Communist
- The Irish People
- The Irish Student
- The Irish Worker
- The Labour Review
- The Leninist
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