Last name Stepanyan (Степанян 
, Stepanyan 
, Степаньян ) , all over the world, is a common family name. The family name Stepanyan is habitual in Armenia, where it is quite a common surname, Russia, and Belarus, where it is quite a rare surname. In absolute terms, the name is most common in Russia, Armenia, and Ukraine. Likewise, Stepanyan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Степанян | Kazakhstan, Armenia, Russia, Belarus, Ukraine |
| Stepanyan | Armenia, Russia, Turkmenistan, United States, France |
| Степаньян | Kazakhstan, Russia, Ukraine |
Stepanian, Stepanjan, Stepanyants, Степаниан, Степанйан, Степаныан, and Степаньянц
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nelson stepanyan Soviet aviator, AZ (b. 1913) |
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anzhela stepanyan Armenian prose writer (1917-2002), GE (b. 1917) |
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| vardush stepanyan actress, GE (b. 1901) |
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| ruben stepanyan Azerbaijani born Armenian conductor and composer (1902-1984), AZ (b. 1902) |
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| emma stepanyan Armenian actress (1915-1989) (b. 1915) |
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| l. s. stepanyan Armenian ornithologist (1931-2002), AM (b. 1931) |
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| nona stepanyan Armenian art historian, art critic, AZ (b. 1932) |
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edgar stepanyan Armenian track cyclist, AM (b. 1997) |
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| oleksandr stepanyan Olympic wrestler, UA (b. 1968) |
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| armen stepanyan Russian football manager and a former player, RU (b. 1974) |
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| anush stepanyan Ph.D. Université Laval 2016 |
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| katelyn d stepanyan researcher (ORCID 0000-0002-5967-5374) |
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| nelli stepanyan Armenian association football player |
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| hayk stepanyan researcher |
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| ani stepanyan researcher |
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