Naval warfare in the Russian invasion of Ukraine began on 24 February 2022, when the Russian Armed Forces launched a full-scale invasion of Ukraine, in a major escalation of the Russo-Ukrainian War, which began in 2014. Media reporting of and focus on the invasion has largely been on the terrestrial and aerial aspects – however, maritime engagements have been consequential during the conflict. Disputes over Ukrainian grain exports through the Black Sea have also played a significant role.

The Snake Island campaign was a period of Russian occupation and military conflict for Snake Island, a small, strategically located Ukrainian island in the Black Sea. On 24 February 2022, the first day of the Russian invasion of Ukraine, the Russian Navy attacked Snake Island and captured it along with its entire garrison, beginning a military occupation of the island. The attack was widely publicized when an audio clip of the Russian cruiser Moskva hailing the island's garrison over the radio demanding their surrender and being told "Russian warship, go fuck yourself" in response went viral, along with initial inaccurate reports of the garrison's deaths. Later on, it emerged that a civilian search and rescue ship trying to evacuate the soldiers was also captured along with the garrison. The ship, its crew, and at least one soldier were subsequently freed in prisoner exchanges.