1984 United States presidential election in Oklahoma

1984 United States presidential election in Oklahoma
Reagan 50–60% 60–70% 70–80% 80–90%	Mondale 50–60%
President before election; Ronald Reagan; Republican	Elected President ; Ronald Reagan; Republican

The 1984 United States presidential election in Oklahoma took place on November 6, 1984. All 50 states and the District of Columbia, were part of the 1984 United States presidential election. Voters chose eight electors to the Electoral College, which selected the president and vice president of the United States.

Oklahoma 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. Reagan won all but three counties, and lost the three he did lose by a combined aggregate of only 381 votes.

Nearly every county in Oklahoma voted in majority for the Republican candidate, a particularly strong turnout even in this typically archconservative state. This trend included Oklahoma City's Oklahoma County. Reagan did best in Texas County, and Mondale did best in Hughes County. The former Democratic stronghold in the Southeastern part of the state is evident in this election as only marginally Republican. Oklahoma weighed in for this election as 10% more Republican than the national average. Reagan's 68.61% of the vote has not been matched in the state since this election.