KCSM

KCSM may refer to:


 * KCSM (FM), a radio station (91.1 FM) licensed to San Mateo, California, United States
 * KPJK, a television station (channel 60) licensed to San Mateo, California, United States, which used the call sign KCSM-TV from 1964 to 2018
 * Kansas City Southern de México, formerly Grupo Transportación Ferroviaria Mexicana, a Mexican railroad subsidiary of Kansas City Southern