Keno is an unincorporated community in Klamath County, Oregon, United States, southwest of Klamath Falls on the Klamath River near Oregon Route 66. As of 2000, the population was 1,059. Keno's elevation is 4,108 feet above sea level. Keno was supposedly named after the first postmaster's bird dog. It was previously called Plevna and Whittles Ferry. Keno post office was established in 1887. One hundred eighty eight children attend Keno's one school, Keno Elementary.