Simeon Boikov

The Aussie Cossack, Aussie Cossack

2026-05-09

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Who is this?

Simeon Boikov (born 15 February 1990), better known by the pseudonym Aussie Cossack, is an Australian right-wing extremist and Russian ultranationalist. He is known for his pro-Russian and COVID-19 misinformation content on YouTube. Following the alleged assault of a pro-Ukrainian protester, and Boikov's subsequent arrest, he has been hiding in Sydney's Russian consulate.