Westmoreland Eastern is a parliamentary constituency represented in the House of Representatives of the Jamaican Parliament. It elects one Member of Parliament by the first past the post system of election. The constituency consists of the eastern part of Westmoreland Parish. It is represented by Jamaica Labour Party MP Daniel Lawrence.
In the 1989 general election, the constituency was covered by Westmoreland North Eastern and Westmoreland South Eastern. The two seats were then merged together in the 1993 general election.
Its most prominent MP was former Prime Minister P. J. Patterson.