The 1840 United States presidential election in Maryland took place between October 30 and December 2, 1840, as part of the 1840 United States presidential election. Voters chose 10 representatives, or electors to the Electoral College, who voted for President and Vice President.

The 1840 United States presidential election was the 14th quadrennial presidential election, held from Friday, October 30 to Wednesday, December 2, 1840. Economic recovery from the Panic of 1837 was incomplete, and Whig nominee William Henry Harrison defeated incumbent President Martin Van Buren of the Democratic Party. The election marked the first of two Whig victories in presidential elections, but was the only one where they won a majority of the popular vote. This was the third rematch in American history, which would not occur again until 1892.