Bầu cử tổng thống Hoa Kỳ tại Maine năm 1984

The 1984 United States presidential election in Maine took place on November 6, 1984. All fifty states and the District of Columbia, were part of the 1984 United States presidential election. Voters chose four electors to the Electoral College, which selected the president and vice president of the United States. Maine was won by incumbent United States President Ronald Reagan of California, who was running against former Vice President Walter Mondale of Minnesota. Reagan ran for a second time with former C.I.A. Director George H. W. Bush of Texas, and Mondale ran with Representative Geraldine Ferraro of New York, the first major female candidate for the vice presidency.

The presidential election of 1984 was a very partisan election for Maine, with more than 99% of the electorate voting either Democratic or Republican, and only four parties appearing on the ballot. Every county in Maine voted for Reagan by a double-digit margin, a strong performance in a historically Republican-leaning state that had trended Democratic since the 1960s. Reagan became the first Republican to win industrialized, Catholic French-Canadian Androscoggin County since Dwight D. Eisenhower in 1956.

Even amidst a national Republican landslide, Maine weighed in as almost 4% more Republican than the national average. This election marked something of a high water mark for Republicans in Maine; no candidate of either party has since come close to Reagan's vote share or margin, and the state at-large has subsequently only voted Republican once more (in the following election of 1988).