The upcoming United States Senate election in Maine will take place on November 5, 2024, with the primary elections having taken place on June 11, 2024. Incumbent Independent U.S. Senator Angus King is seeking re-election. King will face Republican Demitroula Kouzounas and Democrat David Costello in the general election. The general election is regarded as a Safe Democratic seat.

Note: Angus King is an Independent, but caucuses with the democrats in the U.S. Senate.