Calaveras County Airport (ICAO: KCPU, FAA LID: CPU), also known as Maury Rasmussen Field, is a public airport located four miles (6 km) southeast of the central business district of San Andreas, in Calaveras County, California, United States. It is owned by the County of Calaveras.

Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, Calaveras County Airport is assigned CPU by the FAA but has no designation from the IATA (which assigned CPU to Cururupu, Maranhão, Brazil).