Santa Rosa Route 66 Airport (ICAO: KSXU, FAA LID: SXU, formerly I58) is a public use airport located three nautical miles (6 km) east of the central business district of Santa Rosa, a town in Guadalupe County, New Mexico, United States. It is owned by the Town of Santa Rosa. The original runway, 08-26, was a section of old U.S. Highway 66 prior to the construction of Interstate 40. The second runway, 01-19, was added in the mid-1990's.

Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned SXU by the FAA but has no designation from the IATA (which assigned SXU to Soddu, Ethiopia).