KMTX may refer to:
- KMTX (FM), a radio station (105.3 FM) licensed to serve Helena, Montana, United States
- KCAP (AM), a radio station (950 AM) licensed to serve Helena, Montana, which used the call sign KMTX from 1976 to 2014
- KTCW, a television station (channel 45/PSIP 46) licensed to Roseburg, Oregon, United States, which used the call sign KMTX-TV from 1992 to 2006
KMTX (105.3 FM, "Helena's Best Variety") is a radio station licensed to serve Helena, Montana. The station is owned by Kevin Terry, through licensee The Montana Radio Company, LLC. It airs an Adult Contemporary music format.
The station was assigned the KMTX-FM call letters by the Federal Communications Commission on March 7, 1984. The station changed its call sign to the current KMTX on December 31, 2014.