Cognomen Garshman (Garshman 
) , around the globe, is a very rare family name. The surname Garshman is characteristic of Northern America, particularly the United States, where it is an extremely rare surname, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Garshman | Canada, United States |
| barbara garshman American television producer and writer, US (b. 1901) |
|