Sergey Valeryevich Aksyonov (Russian: Серге́й Вале́рьевич Аксёнов; Ukrainian: Сергій Валерійович Аксьонов, romanized: Serhiy Valeriiovych Aksionov; Romanian: Serghei Valerievici Aksionov; born 26 November 1972) is a Russian politician serving as the head of the Republic of Crimea since 9 October 2014, a territory internationally recognised as part of Ukraine.

His father Valery Aksyonov was a Red Army officer and the founder and leader of a group called the Russian Community of Northern Moldova in Bălți.

[10] Ukrainian politician and former chief of militsiya in Crimea, Hennadiy Moskal (1997–2000) claims that Aksyonov had connections with the criminal world.

According to Kyiv Post, Voronkov is a well-known mafia boss who was released from prison in 2008 and is still doing business in Crimea," said Andrei Yanitskiy, a journalist of Livy Bereh newspaper who investigated Aksyonov.

[6] The hit was conducted with automatic weapons by militants of the Greki gang Ruslan and Rusel from Yevpatoria who were driving a black Samara.

[6] A HUBOZ operative stated that Aksyonov kept close relations with Sergei Voronkov ("Voronok") and the "godfather" of Salem Vyacheslav Sheviev (leader of Party of Economic Revival).

[20] Andriy Senchenko, a Crimean member of Verkhovna Rada from the Batkivshchyna party, alleged that Aksyonov was involved in these activities together with Supreme Council Chairman Vladimir Konstantinov.

Mykola Kirilchuk, a former Crimean Minister of Industry, stated that in 2008–2009 Aksyonov borrowed almost $5 million from him to develop the Russian Unity party.

[18] Since 2009, he has been a member of the board in "Гражданский актив Крыма", co-president of Coordinating Council "За русское единство в Крыму!"

[28] During a talk show on the TV channel ATR on 3 March 2012, Aksyonov commented about a possible accession of Crimea to Russia: "I think the time for this process has already passed.

[3] After sealing the doors and confiscating all mobile phones, the MPs who had been invited by Aksyonov to enter the building passed the motion in the presence of the gunmen armed with Kalashnikov assault rifles and rocket launchers.

[32] Various media accounts have disputed whether he was able to gather a quorum of 50 of his peers before the session convened that day, and some Crimean legislators who were registered as present have said they did not come near the building.

[33] Under the Ukrainian constitution, the Prime Minister of Crimea is appointed by the autonomous republic's parliament following consultations with the President of Ukraine.

The Director of the Information Analysis department of the legislature's secretariat, Olha Sulnikova, has stated that an agreement exists with ousted president Viktor Yanukovych.

[30] The interim President of Ukraine, Oleksandr Turchynov, decreed the appointment of Aksyonov as the head of the government of Crimea to be unconstitutional.

He also promised that if gays tried to hold public gatherings, "our police and self-defense forces will react immediately and in three minutes will explain to them what kind of sexual orientation they should stick to.