KFYR may refer to:
- KFYR (AM), a radio station (550 AM) licensed to Bismarck, North Dakota, United States
- KFYR-TV, a television station (channel 5 analog/31 digital) licensed to Bismarck, North Dakota, United States
- KYYY, a radio station (92.9 FM) licensed to Bismarck, North Dakota, United States, which formerly used the call sign KFYR-FM
KFYR (550 AM) is a radio station located in Bismarck, North Dakota, owned by iHeartMedia, Inc.. It transmits on a 5,000- Watt signal that can be heard in seven U.S. states and three Canadian provinces. KFYR also broadcasts on translator K259AF (99.7 FM) in Bismarck. 99.7 FM was previously a simulcast of KQDY 94.5 FM before 2011.
KFYR boasts an enormous coverage area. It can be heard across almost all of North Dakota during the day, as well as in parts of Minnesota, South Dakota, Montana, Manitoba, Saskatchewan and Nebraska. This owes to a combination of its position only one channel from the bottom of the North American AM dial, transmitter power and North Dakota's flat land. On the AM band, lower frequencies have longer waves, which tend to travel farther across terrain. This is especially true for stations that operate at 5,000 watts or more. Additionally, the flat landscape of the prairies makes for near-perfect ground conductivity. It has been claimed that KFYR has the largest land coverage area in the United States of any AM radio station during daytime hours. A similar claim can be made for WNAX (AM) in Yankton, South Dakota, which transmits on 570AM.