Surname Tachjian (Tachjian 
) , around the world, is a very rare cognomen. The cognomen Tachjian is characteristic of Lebanon, where it is a rare surname, Canada, where it is a very rare surname, and Australia. In absolute terms, the name is most common in Lebanon, Canada, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Tachjian | Australia, Germany, Canada, United States, Lebanon |
| nchan tachjian TR (b. 1881) |
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| vahe tachjian Armenian historian, LB (b. 1968) |
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| vahé tachjian (b. 1968) |
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