From March 10 to June 2, 1964, voters of the Republican Party elected 1,308 delegates to the 1964 Republican National Convention through a series of delegate selection primaries and caucuses, for the purpose of determining the party's nominee for president in the 1964 United States presidential election.

The 1964 Republican National Convention took place in the Cow Palace, Daly City, California, from July 13 to July 16, 1964. Before 1964, there had been only one national Republican convention on the West Coast, the 1956 Republican National Convention, which also took place in the Cow Palace. Many believed that a convention at San Francisco indicated the rising power of the Republican Party in the west.