WMPX can refer to the following United States broadcast stations:
- WMPX (AM), an AM radio station broadcasting at 1490 kHz in Midland, Michigan
- WMPX-LP 33, a low-power television station in Dennis, Massachusetts
- WPFO Fox 23 in Waterville/Portland, Maine, formerly used WMPX-TV call sign from 1999 to 2002
WMPX (1490 AM) is a radio station licensed to Midland, Michigan broadcasting a Soft AC (Gold-based AC) format. The station is imaged as "Sunny 97-7," with 97.7 being the frequency of sister station WMRX-FM. Until January 2014, the station featured the America's Best Music format distributed by Westwood One.
WMPX is simulcast with WMRX-FM 97.7 24/7 except for some local sports play-by-play. Although there are other radio stations licensed to Midland, WMPX is today the only commercial radio station that primarily serves the Midland area ( WUGN-FM is a non-commercial religious station and WKQZ-FM is licensed to Midland but has studios in Saginaw).
WMPX began broadcasting in 1948 as WMDN. WMDN was Midland's first radio station, owned by the city's newspaper, the Midland Daily News. That station continued to use that callsign until July 1971. (The WMDN calls are now used for a television station in Meridian, Mississippi.)