Grigoryants, Grigoriants and Grigorýanc are transliterations of the Russian surname Григорьянц (of Armenian origin) and the Armenian surname Գրիգորյանց, patronymic derivarions from the given name Grigor. People with those names include:
Boris Grigorýanc (active from 2005), Turkmen football manager Elena Grigoryants (born 1965), Soviet and Russian culturologist, art critic Grigory Sarkisovich Grigoryants (1919–1982), Soviet surgeon Norat Ter-Grigoryants (born 1936), Soviet and Armenian lieutenant-general Sergei Grigoryants (1941–2023), Soviet dissident and former political prisoner, journalist, and literary critic Sergey Grigoriants (born 1983), Russian Grandmaster chess player
See also
Krikorian Grigoryan