CW4

CW4 may refer to:

Current

 * KCWO-TV in Big Spring / Odessa / Midland, Texas
 * KRON-TV in San Francisco, California
 * KTIV, on DT2 in Sioux City, Iowa
 * KTKB-LD in Tamuning, Guam (cable channel; broadcasts on channel 26)
 * WMOW in Wausau, Wisconsin
 * WOAI-TV, on DT2 in San Antonio, Texas

Former

 * KOMO-TV, on DT2 in Seattle, Washington (secondary CW affiliation from 2023 to 2024)
 * KXLF-TV-DT2 in Butte, Montana (CW affiliated from 2006 to 2023)
 * WCBI-TV, on DT3 in Columbus, Mississippi (CW affiliated from 2006 to 2024)
 * WTTV in Bloomington / Indianapolis, Indiana (CW affiliated from 2006 to 2014)

Other uses

 * CW4, a postcode district in the CW postcode area
 * Chief Warrant Officer 4, a rank of Warrant Officer (United States) in the United States military
 * HLA-Cw4 is a serotype within the HLA-C serotype group