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In all the world, Klass (Klass , كلاس , 克拉斯 ) is a rare unisex first name. The forename Klass is habitual in the Democratic Republic of the Congo, where it is a rare feminine name, South Africa, where it is a rare masculine name, and Sudan. Measured by absolute frequency, this name is the most popular in the Democratic Republic of the Congo, South Africa, and Mexico. More prevalently, Klass is the last name as well as the forename.
Klass is also a name for the fictitious and mythical characters: Klas Svensson , the fictional character of the Bert Diaries; Claes Waltin ; Klaas Guts and Klaas Vermeulen .