Presidential primaries and caucuses of the Republican Party took place within all 50 U.S. states, the District of Columbia, and five U.S. territories between February 1 and June 7, 2016. These elections selected the 2,472 delegates that were sent to the Republican National Convention. Businessman and reality television personality Donald Trump won the Republican nomination for president of the United States.

The 2016 Republican National Convention, in which delegates of the United States Republican Party chose the party's nominees for president and vice president in the 2016 U.S. presidential election, was held July 18–21, 2016, at Quicken Loans Arena in Cleveland, Ohio. The event marked the third time Cleveland has hosted the Republican National Convention and the first since 1936. In addition to determining the party's national ticket, the convention ratified the party platform.