Cognomen Ohannessian (Ohannessian 
) , worldwide, is a rare surname. The cognomen Ohannessian is habitual in Lebanon, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and France. Measured by absolute frequency, it is commonest in Lebanon, the United States, and France.
| VARIANT | COUNTRY |
|---|---|
| Ohannessian | Canada, France, United States, Argentina, Lebanon |
| robin ohannessian researcher (ORCID 0000-0003-1999-7683) |
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| christine mccauley ohannessian academic |
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| mary margaret ohannessian Peerage person ID=200217 |
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