KMOO-FM (99.9 FM) is a radio station broadcasting a Classic country format.

Licensed to Mineola, Texas, United States, the station serves the Tyler-Longview area.

It was owned by Sam and Joyce Curry, and was the FM sister station to 1510 kHz KMOO.

Under Curry's tenure, the station was referred to by its ownership and on air personalities solely as, "K M Double O," and not allowed to call the station "KMOO," with the last three letters pronounced in a manner similar to a noise made by cattle.

Sam Curry sold the station in 1995 when he planned to embark on a race for Wood County Judge as a Democrat, a race he ultimately lost.