The 1954 United States Senate special election in California was held on November 2, 1954, to elect a U.S. Senator to complete the unexpired term of Senator Richard Nixon, who resigned on becoming Vice President of the United States following the 1952 presidential election. Incumbent Republican U.S. Senator Thomas Kuchel, who had been appointed by Governor Earl Warren, won election to the remainder of the term, defeating Democratic nominee Sam Yorty.
Primary elections were held on June 8, 1954.