Family name Johm (Johm 
) , throughout the world, is a rare last name. The surname Johm is habitual in Gambia, where it is quite a rare surname, Myanmar, where it is a rare surname, and Venezuela, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Gambia, Myanmar, and Nigeria. Also, Johm is the forename as well as the last name.