The 1956 Republican presidential primaries were the selection process by which voters of the Republican Party chose its nominee for President of the United States in the 1956 U.S. presidential election. Incumbent President Dwight D. Eisenhower was again selected as the nominee through a series of primary elections and caucuses culminating in the 1956 Republican National Convention held from August 20 to August 23, 1956, in San Francisco, California.