Surname Greatman (Greatman 
) , globally, is a rare cognomen. The last name Greatman is habitual in Nigeria, where it is a very rare surname, Canada, where it is an extremely rare surname, and the United States. Also, Greatman is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Greatman | India, United States, South Africa, Nigeria, Zimbabwe |