Yermolay () is a Russian masuline given name. It is also written as Ermolai, Ermolay, and Yermolai.
Yermolay is derived from the Greek Ermolaos (), meaning "the people of Hermes".
It is the basis of patronymic surnames Yarmolenko, Yermolayev, Yermolenko, Yermolin, Yermolkin, Yermolov, Yermolyev, Yermoshin.
People with the given name Yermolay include: