The 1864 United States presidential election in Maryland took place on November 8, 1864, as part of the 1864 United States presidential election. Maryland voters chose seven representatives, or electors, to the Electoral College, who voted for president and vice president.

The 1864 United States presidential election was the 20th quadrennial presidential election. It was held on Tuesday, November 8, 1864. Near the end of the American Civil War, incumbent President Abraham Lincoln of the National Union Party easily defeated the Democratic nominee, former General George B. McClellan, by a wide margin of 212–21 in the electoral college, with 55% of the popular vote. For the election, the Republican Party and some Democrats created the National Union Party, especially to attract War Democrats.