The Rialto Theatre is a 1,200-seat theater in South Pasadena, California. Located on Fair Oaks Avenue, it is considered one of the last single-screen theaters in Southern California and is listed on the National Register of Historic Places.

South Pasadena is a city in Los Angeles County, California, United States. As of the 2010 census, it had a population of 25,619, up from 24,292 in the 2000 census. It is located in West San Gabriel Valley. It is 3.42 square miles (8.9 km2) in area and lies between the city of Pasadena, of which it was once a part, and the metropolis of Los Angeles. South Pasadena is the oldest self-builder of floats in the historic Tournament of Roses Parade.