Last name Sagma (Summer 
, Saum 
, Sagma 
) , in the entire world, is a common surname. The family name Sagma is characteristic of Austria, where it is quite a common surname, Macao, where it is quite a rare surname, and Brunei. Measured by absolute frequency, this name is the most popular in the United States, China, and Germany. More frequently, Sagma is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Summer | China, India, United States, Germany, Austria |
| Saum | India, United Kingdom, United States, Germany, Indonesia |
| Sagma | Spain, India, Mexico, Nigeria, United States |
| Sumpter | China, Australia, United Kingdom, United States, Germany |