KCLS may refer to:
KCLS (FM), a radio station (101.5 FM) in Leeds, Utah, United States KCLS (Arizona), a defunct radio station in Flagstaff, Arizona, United States Kenosha County Library System, library system serving Kenosha County, Wisconsin, United States King County Library System, a library system in King County, Washington, United States Chehalis-Centralia Airport's ICAO code for the airport in Washington state