Cognomen Penah (Penah 
) , all around the world, is a rare family name. The family name Penah is habitual in Indonesia, where it is a very rare surname, Iran, and Turkey, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Indonesia, Iran, and the United States. More frequently, Penah is the forename as well as the last name.