The People's National Movement (PNM) is the longest-serving and oldest active political party in Trinidad and Tobago. The party has dominated national and local politics for much of Trinidad and Tobago's history, contesting all elections since 1956 serving as the nation's governing party or on four occasions, the main opposition. It is one out of the country's two main political parties. There have been four PNM Prime Ministers and multiple ministries. The party espouses the principles of liberalism and generally sits at the centre to centre-left of the political spectrum.

The politics of Trinidad and Tobago function within the framework of a unitary state regulated by a parliamentary democracy modelled on that of the United Kingdom of Great Britain and Northern Ireland, from which the country gained its independence in 1962. Under the 1976 republican Constitution, the monarch was replaced as head of state by a President chosen by an electoral college composed of the members of the bicameral Parliament, consisting of the Senate and the House of Representatives.