Bầu cử tổng thống Hoa Kỳ tại Michigan năm 1940

The 1940 United States presidential election in Michigan took place on November 5, 1940, as part of the 1940 United States presidential election. Voters chose 19 representatives, or electors, to the Electoral College, who voted for president and vice president.

Michigan was narrowly won by the Republican candidate Wendell Willkie over Democratic incumbent Franklin D. Roosevelt by 6,926 votes in the closest race in any statewide presidential election since 1916 when Woodrow Wilson won by 56 votes in New Hampshire and opponent Charles Evans Hughes won in Minnesota by 392 votes. Willkie received 49.85% of ballots cast, while Roosevelt received 49.52%. Roosevelt's result in Michigan remains the highest percentage of the vote received by a candidate who still lost the state. This was the only election where Michigan supported Roosevelt's opponent, and it was also the only one of the ten states won by Willkie that Roosevelt would reclaim in 1944. This is also one of only four occasions where Michigan and Pennsylvania voted for different presidential candidates ever since the Democrats and Republicans became the two major parties in U.S. politics.