The Grenada National Party (GNP) was a conservative political party in Grenada. The GNP was the seond oldest of the modern political parties in Grenada.
The GNP was founded in 1955 and took its support from the urban middle class and landowners. It first contested national elections in 1957 when it won two of the eight seats, tied with the GULP and the People's Democratic Movement. Its leader Herbert
Blaize became the island's leader as part of an anti-GULP coalition. Although GULP convincingly won the next elections in 1961, taking eight of the ten seats, early elections were held in 1962, in which the GNP won six of the 10 seats to return to power. It returned to opposition following the 1967 elections.
For the 1976 elections it was part of the People's Alliance alongside the New Jewel Movement and the United People's Party. However, they failed to defeat GULP.
In 1984 it merged with the National Democratic Party and the Grenada Democratic Movement to form the New National Party, with Blaize as its leader.