KNDK (1080 kHz) is an AM radio station serving Langdon, North Dakota. Owned by Simmons Broadcasting, it broadcasts a news/talk format, consisting primarily of syndicated programming (primarily from Fox News Radio, and local agricultural news programs. All four Simmons Broadcasting stations share studios at 1403 Third Street in Langdon, ND. It serves as the only American affiliate station of the Winnipeg Jets of the National Hockey League.

1080 AM is a United States clear channel frequency; KOAN, KRLD, and WTIC share Class A status on this frequency.

In 2022, KNDK briefly replaced the talk portion of its format with farm news and shifted its music to classic country. It has since returned to a news/talk format.