Welsh Labour (Welsh: Llafur Cymru) is the part of the United Kingdom Labour Party that operates in Wales. Labour is the largest and most successful political party in modern Welsh politics, having won (with its predecessor organisations) the largest share of the vote at every UK General Election since 1922, every Welsh Assembly election since 1999, and each European Parliament election from 1979 until 2009.

The Labour Party in Wales has 1 of 4 Welsh seats in the European Parliament, 29 of 40 Welsh seats in the UK Parliament, 30 of 60 seats in the National Assembly for Wales, and 576 of 1,264 principal local authority councillors, including overall control of 10 of 22 Welsh local authorities.

Welsh Labour is formally part of the Labour Party. It is neither separately registered with the Electoral Commission under the terms of the Political Parties, Elections and Referendums Act, nor is it part of a federal organisation (such as the relationship between the Welsh Liberal Democrats and the Liberal Democrats, for example). As such it does not have an office of Leader. Carwyn Jones is regarded as the de facto Leader, although his constitutional position is that of Leader of the National Assembly Labour Party (NALP), analogous to the Parliamentary Labour Party (PLP). As with Scottish Labour, Welsh Labour has its own General Secretary which is the administrative head of the party and is responsible for how the party is run.

Carwyn Howell Jones (born 21 March 1967) is a Welsh politician and the First Minister of Wales. The third official to lead the Welsh Government, Jones has been Assembly Member for Bridgend since 1999. In the coalition government of Welsh Labour and Plaid Cymru, he was appointed Counsel General for Wales and Leader of the House on 19 July 2007. Along with a number of other Assembly Members, he is a fluent Welsh speaker, and is also a member of Amnesty International and the Fabian Society. He was elected to succeed Rhodri Morgan as the new Leader of Welsh Labour on 1 December 2009. On 9 December he was nominated as First Minister and unanimously elected by the National Assembly. He was sworn into office the following day.

Born in Swansea, he was raised in Bridgend in a fluent Welsh speaking family. He was a pupil at Brynteg Comprehensive School in Bridgend, and then studied at the University of Wales, Aberystwyth, where he joined the Labour Party during the Miners' Strike.

Jones trained as a barrister at the Inns of Court School of Law, London, and was called to the Bar at Gray's Inn in 1989.

Julie Morgan AM (born 2 November 1944) is a British Labour Party politician, who was the Member of Parliament (MP) for Cardiff North from 1997 until 2010; she is married to former First Minister of Wales, Rhodri Morgan. Julie Morgan won the Cardiff North seat in the Welsh Assembly in the 2011 elections.

Julie Edwards was born in Cardiff in 1944. She was educated at Dinas Powys Primary School and Howell's School Llandaff. She then attended King's College London where she graduated with a BA in English in 1965. Just as her first term at university was about to begin, a general election was called, and she returned to Cardiff to campaign for Jim Callaghan in the seat which was then Cardiff, South East.^{[citation needed]}

Despite Callaghan's protestations that she should go back to university, she campaigned for his victory alongside Neil Kinnock, the future Glenys Kinnock and Rhodri Morgan, whom she would marry in 1967. Following her undergraduate degree, Morgan studied at the University of Manchester. She also holds a postgraduate diploma in Social Administration from University College, Cardiff.^{[citation needed]}

Leighton Andrews (born 11 August 1957) is a Welsh Labour politician, currently the National Assembly for Wales member for Rhondda since 2003. He is Minister for Children, Education & Lifelong Learning in the Welsh Government.

Andrews was born in Cardiff, and brought up in Barry until the age of 11, when his family moved to Dorset. He holds a BA Honours (English and History) from the University of Wales, Bangor and an MA in History from the University of Sussex. He has been a visiting Professor at the University of Westminster fom 1997 to 2002; and is an Honorary Professor at Cardiff University.

Andrews is married to Ann Beynon, BT Director Wales; the couple have two children.

He is a published academic, whose peer-reviewed articles and chapters include The National Assembly for Wales and broadcasting policy, 1999-2003 Media, Culture & Society, Vol. 28, No. 2, 191-210 (2006);Wales and the UK’s Communications Legislation 2002–2003, Cyfrwng 2005, and Spin: from tactic to tabloid, Journal of Public Affairs, Volume 6, Issue 1, Date: February 2006, Pages: 31-45 and the chapter 'Lobbying for a new BBC Charter' in The Handbook of Public Affairs edited by Phil Harris and Craig Fleischer, Sage, 2006.

Huw Lewis AM (born 17 January 1964) is a Welsh Labour Co-operative politician. Born in Merthyr Tydfil, Glamorgan, Lewis has represented the Merthyr Tydfil and Rhymney constituency since the National Assembly for Wales was established in 1999.

Born in Merthyr Tydfil and brought up in Aberfan, he attended the University of Edinburgh. Active in the local Scottish Labour Party, he worked for both Labour Party leader John Smith and later Donald Dewar. Lewis campaigned for a Scottish Assembly alongside Edinburgh Labour Club colleagues Douglas and Wendy Alexander, and Pat McFadden.

Returning to South Wales, Lewis became a chemistry teacher at Afon Taf High School.

Elected to the position of Assistant General Secretary of Welsh Labour, he orgaised the campaign for the Labour "Yes" Vote campaign in 1997, that lead to the creation of the Welsh National Assembly.

Elected to the National Assembly for Wales in 1999 as a Labour and Co-operative Party candidate to represent Merthyr Tydfil and Rhymney. He has been party Whip in the Assembly, a post he resigned following the resignation of Alun Michael as First Secretary. He has also been Deputy Minister for Education and Lifelong Learning in October 2000, a post he resigned following the use of a landfill site in Trecatti, within his constituency, for the disposal of carcasses during the foot and mouth crisis (16 April 2001).