Tony Blair, Prime Minister of the United Kingdom
John Bruton, Prime Minister of Ireland
David Trimble, Leader of the Ulster Unionist Party
Seamus Mallon, Deputy Leader of the Social Democratic and Labour Party (SDLP)
Gerry Adams, President of Sinn Féin
Mo Mowlam, Secretary of State for Northern Ireland
The Belfast Agreement was also endorsed by the Irish Congress of Trade Unions (ICTU) and the Confederation of British Industry (CBI).