Family name Petrosian (Петросян 
, Petrosian 
, پتروسیان) , around the world, is a common cognomen. The cognomen Petrosian is characteristic of Georgia, where it is quite a common surname, Russia, and Belarus, where it is quite a rare surname. In absolute terms, it is the most numerous in Russia, Ukraine, and Georgia. Likewise, Petrosian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Петросян | Russia, Kazakhstan, Ukraine, Armenia, Belarus |
| Petrosian | Greece, Canada, United States, Armenia, Georgia |
| פטרוסיאן | Israel |
Bedrosian, Bedrossian, Petrosjan, Petrossian, Petrosyan, Петросиан, Петросйан, Петросьян, and Петьросян
| rona petrosian (b. 1923) |
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| ara petrosian Cypriot association football player, CY (b. 1967) |
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| tigran a. petrosian chess player (b. 1971) |
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| suren petrosian chess player (b. 1974) |
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| vahe' petrosian researcher |
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| karen petrosian chess player |
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