KCMT (92.1 MHz) is a commercial FM radio station licensed to Green Valley, Arizona, and serving the Tucson metropolitan area. It airs a regional Mexican radio format and is owned by Lotus Communications. Its studios are on North Commerce Drive in Tucson. KCMT is often the highest-rated Spanish-language radio station in the Nielsen ratings for Tucson, competing with 105.3 KZLZ, owned by Bustos Media.

KCMT is a Class C2 FM station. It has an effective radiated power (ERP) of 50,000 watts. The transmitter is off Pima Mine Ranch Road in Tucson. KCMT broadcasts using HD Radio technology. Its HD2 digital subchannel carries a Spanish adult hits format as "Exito 93.3". It feeds a 200-watt FM translator at 93.3 MHz. The main signal is also heard on a 240-watt FM translator at 95.7 MHz.

The station signed on the air on February 20, 1983; 41 years ago (1983-02-20). Its original call sign was KFXX. It was a Class A FM station, limited to 3,000 watts of power, on a short tower in Green Valley. It was barely audible in the city of Tucson. The station's class was later boosted to C2, allowing it to increase power to 50,000 watts. Its tower was relocated into the more lucrative Tucson radio market.

In 1993, the station was acquired by Lotus Communications for $1.26 million. It played alternative rock as KFMA.

Lotus already owned a Regional Mexican station on 102.1 MHz, KCMT. On March 21, 2014, Lotus switched the two stations. KCMT and its Regional Mexican format moved to 92.1 FM, while KFMA and its alternative rock sound moved to the 102.1 FM frequency.

• List of radio stations in Arizona

• Official KCMT Website
• Facility details for Facility ID 736958 (KCMT) in the FCC Licensing and Management System
• KCMT in Nielsen Audio's FM station database
• Facility details for Facility ID 82314 (K239CF) in the FCC Licensing and Management System
• K239CF at FCCdata.org