Surname Sangmo (Sangmo 
) , throughout the world, is a rare last name. The last name Sangmo is habitual in Nepal, where it is quite a rare surname, New Zealand, where it is a rare surname, and Switzerland, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Nepal, India, and the United States. More frequently, Sangmo is the forename as well as the last name.