Anthony Charles Lynton Blair (born 6 May 1953) is a British (United Kingdom) Labour politician (Labour Party (UK)), who served as Prime Minister (Prime Minister of the United Kingdom) of the United Kingdom from 2 May 1997 to 27 June 2007. He was the Member (Member of Parliament) of Parliament (Parliament of the United Kingdom) for Sedgefield (Sedgefield (UK Parliament constituency)) from 1983 to 2007 and Leader of the Labour Party (List of United Kingdom Labour Party leaders) from 1994 to 2007. On the day he resigned as Prime Minister, he was appointed the official Envoy (diplomat) of the Quartet on the Middle East on behalf of the United Nations, the European Union, the United States, and Russia.

Tony Blair was elected Leader of the Labour Party (Labour Party (UK)) in the leadership election of July 1994 (Labour Party (UK) leadership election, 1994), following the sudden death of his predecessor, John Smith (John Smith (Labour Party leader)). Under his leadership, the party adopted the term "New Labour (Labour Party (UK)#New Labour)", abandoned policies it had held for decades, and moved towards the centre ground. Blair led Labour to a landslide victory in the 1997 general election (United Kingdom general election, 1997). In the first years of the New Labour government, Blair handed over control of interest rates to the Bank of England; introduced the minimum wage; signed the Belfast Agreement; introduced tuition fees; and established the Scottish Parliament, the National Assembly for Wales, and the Northern Ireland Assembly. In his first six years, Blair had British troops ordered into battle five times?more than any other prime minister in history.

Blair is the Labour Partys longest-serving Prime Minister; the only person to have led the Labour Party to three consecutive general election (United Kingdom general elections) victories; and the only Labour Prime Minister to serve consecutive terms, more than one of which was at least four years long. He was succeeded as Leader of the Labour Party on 24 June 2007 and as Prime Minister on 27 June 2007 by Gordon Brown, Chancellor of the Exchequer.

In May 2008 Blair launched his Tony Blair Faith Foundation. This was followed in July 2009 by the launching of the Faith and Globalisation Initiative (Faith and Globalisation initiative) with Yale University in the USA, Durham University in the UK and National University of Singapore in Asia to deliver a postgraduate programme in partnership with the Foundation.