The Grenada United Labour Party (GULP) was a political party in Grenada.

Formerly called the Grenada Peoples Party (GPP), GULP was created in 1951 from a faction of the Manual and Mental Workers Union. With overwhelming support from the working class, GULP under its leader, Eric Gairy, won the 1951 elections in Grenada, the first elections after adult suffrage was granted. From 1950 to 1972, GULP won five of seven general elections held. GULP won one seat in 1984, four seats in 1990 and two seats in 1995.

GULP won no seats in the 1999 election, but Michael Baptiste of the ruling New National Party defected to the GULP in June 2000, giving the party one seat in the House of Representatives. Gloria Payne Banfield was elected as GULP leader in February 2003, becoming Grenada's first female party leader. In the general election of 2003, the party won 3.2% of the popular vote and no seats.

For the July 2008 election, the GULP formed a coalition with the People's Labour Movement: The United Labour Platform. The United Labour Platform in 2008 fielded 11 candidates for the 15 seats, netting 0.84% of the vote and winning no seats.