| Union Name | Website |
| ACCORD | www.accord-myunion.org |
| Association of First Division Civil Servants | www.fda.org.uk |
| Association of Higher Civil & Public Servants | www.ahcps.ie |
| Association of Irish Traditional Musicians | |
| Association of Secondary Teachers Ireland | www.asti.ie |
| Association of Teachers and Lecturers | www.atl.org.uk |
| Bakers Food and Allied Workers Union | www.bfawu.org |
| British Actors Equity Association | www.equity.org.uk |
| Broadcasting Entertainment Cinematograph and Theatre Union | www.bectu.org.uk |
| Building and Allied Trades Unions | www.batu.ie |
| Chartered Society of Physiotherapy | www.csp.org.uk |
| Civil and Public Services Union | www.cpsu.ie |
| Communication Workers' Union - UK | www.cwuniregion.org.uk |
| Communications Workers' Union | www.cwuconnect.org |
| Electricity Supply Board's Officer's Association | www.esboa.ie |
| Fire Brigades' Union | www.fbu.org.uk |
| GMB | www.gmb.org.uk |
| Guinness Staff Union | www.gsu.ie |
| Irish Bank Officials' Association | www.iboa.ie |
| Irish Federation of University Teachers | www.ifut.ie |
| Irish Medical Organisation | www.imo.ie |
| IMPACT | www.impact.ie |
| Irish National Teacher's Organisation | www.into.ie |
| Irish Nurses and Midwives Organisation | www.inmo.ie |
| MANDATE | www.mandate.ie |
| Medical Laboratory Scientists Association | www.mlsa.ie |
| National Association of Schoolmasters and Union of Women Teachers | www.nasuwt.org.uk |
| National Union of Journalists | www.nuj.ie |
| National Union of Rail, Maritime and Transport Workers | www.rmt.org.uk |
| National Union of Sheet Metal Workers of Ireland | |
| Northern Ireland Public Service Alliance | www.nipsa.org.uk |
| Operative Plasterers and Allied Trades Society of Ireland | www.plasterersunion.com |
| Prison Officers' Association | www.poa.ie |
| Prison Officers' Association (Northern Ireland) | www.poauk.org.uk |
| Public and Commercial Services Union | www.pcs.org.uk |
| Public Service Executive Union | www.pseu.ie |
| Services Industrial Professional Technical Union | www.siptu.ie |
| Society of Radiographers | www.sor.org |
| Teachers' Union of Ireland | www.tui.ie |
| Technical Engineering and Electrical Union | www.teeu.ie |
| Transport Salaried Staff's Association | www.tssa.ie |
| Ulster Teachers' Union | www.utu.edu |
| Union of Construction, Allied Trades and Technicians | www.ucatt.ie |
| Union of Shop Distributive and Allied Workers | www.usdaw.org.uk |
| UNISON | www.unison.org.uk/northernireland |
| Unite | www.unitetheunion.com/regions/ireland.aspx |
| University & College Union | www.ucu.org.uk/ni%7C |
| Veterinary Ireland | www.veterinaryireland.ie |
| Veterinary Officers Association | www.voa.ie |