The 1955 USC Trojans baseball team represented the University of Southern California in the 1955 NCAA baseball season.
The Trojans played their home games at Bovard Field.
The team was coached by Rod Dedeaux in his 14th year at USC.
The Trojans won the California Intercollegiate Baseball Association championship, the Pacific Coast Conference Tournament, and the District VIII Playoff to advance to the College World Series, where they were defeated by the Colgate Red Raiders.
Rod Dedeaux