Surname Амбартсумов (Амбартсумов 
, Ambartsumov 
) , throughout the world, is a rare family name. The surname Амбартсумов is habitual in Lithuania, where it is a rare surname, Russia, where it is a very rare surname, and Greece. Measured by absolute frequency, it is the most numerous in Russia, the United States, and Lithuania.
| VARIANT | COUNTRY |
|---|---|
| Амбартсумов | Russia |
| Ambartsumov | Lithuania, Greece, Canada, United States, Russia |