Family name Monly (Monly 
) , around the globe, is a very rare surname. The cognomen Monly is habitual in Myanmar, where it is a rare surname, Israel, where it is a very rare surname, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Myanmar, Israel, and India. More frequently, Monly is the forename as well as the last name.