Last name Lonmo (Lonmo 
) , in all the world, is a very rare surname. The cognomen Lonmo is characteristic of Norway, where it is a rare surname, the United Kingdom, where it is an extremely rare surname, and Venezuela. Measured by absolute frequency, this name is the most popular in Norway, the United Kingdom, and the United States. Much less frequently, Lonmo is the forename as well as the last name.