Serhiy Hennadiyovych Arbuzov (Ukrainian: Сергій Геннадійович Арбузов, Russian: Сергей Геннадьевич Арбузов, romanized: Sergey Gennadyevich Arbuzov; born 24 March 1976) is a Ukrainian former banker and politician who briefly served as acting prime minister of Ukraine from 28 January to 22 February 2014, following the resignation of Mykola Azarov amidst the escalating Euromaidan movement. He previously served as First Vice Prime Minister of Ukraine from 24 December 2012 to 28 January 2014. On 27 February 2014, in the aftermath of the Revolution of Dignity, Arbuzov was dismissed, and Arseniy Yatsenyuk was elected as the new prime minister.
After the Revolution of Dignity, Arbuzov fled to Russia, where he resides in the prestigious Rublevka area in Moscow in exile and is wanted by the General Prosecutor of Ukraine. Arbuzov's defense insists that it is political persecution.