| KMXS | |
| City: | Anchorage, Alaska |
| Area: | Anchorage, Alaska |
| Branding: | Mix 103.1 |
| Frequency: | 103.1 MHz |
| Airdate: | September 1, 1987 (as KXDZ) |
| Format: | Hot adult contemporary |
| Erp: | 100,000 watts |
| Haat: | 31.9 meters |
| Class: | C1 |
| Facility Id: | 52677 |
| Callsign Meaning: | K MiX S |
| Former Callsigns: | KBLK (1985–1986, CP) KXDZ (1986–1994) |
| Owner: | Alpha Media LLC |
| Licensee: | Alpha Media Licensee LLC |
| Affiliations: | Compass Media Networks |
| Sister Stations: | KBRJ, KEAG, KFQD, KHAR, KWHL |
| Website: | kmxs.com |
| Licensing Authority: | FCC |
KMXS (103.1 FM) is a commercial hot adult contemporary music radio station in Anchorage, Alaska. Owned by Alpha Media LLC, its studios are located in Anchorage (two blocks west of Dimond Center), and its transmitter is in the North Star neighborhood. The station unveiled a new logo and positioner in 2020.