Yermak or Ermak may refer to:

Places

* Aksu, Kazakhstan, a city in Kazakhstan, known as Yermak until 1993 * Yermak Point in Antarctica * Yermak Stone, a cliff in Perm Krai, Russia

People

* GAZ Ermak, a Russian truck * Yermak (1898 icebreaker), an Imperial Russian and later Soviet ship * Yermak Angarsk, an ice hockey team in Angarsk, Russia * Yermak Monument in Novocherkassk, Russia * Yermak-McFaul Expert Group on Russian Sanctions, a group working on sanctions against Russia and Belarus in response to the 2022 Russian invasion of Ukraine {{disambiguation, geo