The 2020 Oklahoma Republican presidential primary took place on March 3, 2020, as one of fourteen contests scheduled for Super Tuesday in the Republican Party presidential primaries for the 2020 presidential election.

The 2016 United States presidential election in Oklahoma was held on Tuesday, November 8, 2016, as part of the 2016 United States presidential election in which all 50 states plus the District of Columbia participated. Oklahoma voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican Party's nominee, businessman Donald Trump, and running mate Indiana Governor Mike Pence against Democratic Party nominee, former Secretary of State Hillary Clinton, and her running mate Virginia Senator Tim Kaine. Oklahoma has seven electoral votes in the Electoral College.