Bầu cử tổng thống Hoa Kỳ tại Ohio năm 1972

The 1972 United States presidential election in Ohio took place on November 7, 1972. All 50 states and the District of Columbia were part of the 1972 United States presidential election. State voters chose 25 electors to the Electoral College, who voted for president and vice president.

Ohio was won by incumbent President Richard Nixon (R) for the third time by a margin of 21.56%. Nixon won every county in the state except Lucas and Athens counties, which McGovern won by only 0.95% and 1.22% respectively, and gained a majority in all eighty-six winning counties except Cuyahoga, Mahoning and Summit counties. Nixon's biggest win was in Union County where he obtained 75.89 percent of the vote. Nonetheless, this result made Ohio almost 2% more Democratic than the nation at large. Athens County was one of six counties nationwide that McGovern flipped outside of his home state of South Dakota.

This was the last occasion until 2012 that Belmont, Jefferson and Monroe counties voted for a Republican presidential candidate, the last until 2016 that Trumbull County would vote for a Republican presidential candidate, the last until 2020 that Mahoning County would do so, and remains the last to date where Cuyahoga County, which hosts Cleveland, has supported a Republican presidential candidate.

Nixon became the first ever Republican to win the White House without carrying Athens County. He also became the second presidential candidate ever to carry Ohio three times, after Franklin D. Roosevelt and Donald Trump, who each won the state in three consecutive elections.