Hryhorchuk is a Ukrainian surname derived from the given name "Hryhor", or Gregory. A variant Ryhorchuk is derived form the simplified variant "Ryhor" of the given name "Hryhor".
- The Russified form is Grigorchuk.
 - Belarusian forms: Hryharchuk (from Ukrainian), Grygarchuk (via Russian), or Ryharchuk (native or from "Ryhorchuk").
 - Polonized form: Gregorczuk.
 - Lithuanized: GrigorĨukas (via Russian), GregorĨukas (via Polish)
 
Notable people with the surname include:
See also
- All pages with titles containing Hryhorchuk
 - All pages with titles containing Grigorchuk
 - Grigorchuk group
 
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