Kogen may refer to:
People Arnie Kogen (), American TV comedy writer and producer and longtime writer for Mad Magazine Jay Kogen (born 1963), American comedy writer, son of Arnie Kogen Emperor Kōgen (, 278–153 BC), eighth emperor of Japan
Other uses Kōgen (), an era of Japanese history from October 1256 to March 1257 Kōgen Prefecture, an administrative division of Korea under Japanese rule corresponding to the historical Gangwon Province
See also
Kogan Kohen