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Last name Keno (Keno , Quine , 凯诺 ) , throughout the world, is a common surname. The last name Keno is habitual in Isle of Man, where it is quite a common surname, Ethiopia, where it is quite a rare surname, and Papua New Guinea. Measured by absolute frequency, it is commonest in Ethiopia, Japan, and the United States. More frequently, Keno is the forename as well as the last name.