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: Grigorčukas (via Russian), Gregorčukas (via Polish) Notable people with the surname include: * Lidiia Hryhorchuk * Roman Hryhorchuk * Rostislav Grigorchuk

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