K56AU was a low-powered television station in Columbia, Missouri. As a TBN owned-and-operated station, it was a repeater that broadcasts programming from the Trinity Broadcasting Network, via satellite. The station broadcast its analog signal on UHF channel 56.
K56AU once held a construction permit to broadcast in digital at 15 kW on channel 47. These facilities were never built, and it was forced to discontinue broadcasting on December 31, 2011 after the end of all broadcasting on channels 52–69; the license was canceled by the Federal Communications Commission on January 12, 2012.