Cognomen Gagman (Gagman 
) , across the world, is a very rare family name. The last name Gagman is habitual in Nigeria, where it is an extremely rare surname, the United Kingdom, and Philippines. Measured by absolute frequency, the name is most common in Nigeria, India, and the United Kingdom. Also, Gagman is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gagman | Philippines, United Kingdom, India, United States, Nigeria |