Oleksandr Ivanovych Muzychko also known under the nickname Sashko Bily (Сашко Білий), was a Ukrainian political activist, a member of UNA-UNSO and coordinator of Right Sector in Western Ukraine. He fought in the First Chechen War on Chechen side.

During the First Chechen War against Russian occupants he led the UNA-UNSO "Viking" group.

After War and regaining independence of Ukraine from USSR, Muzycko lived in Ukraine.

In 1995 Muzychko was convicted in causing a heavy bodily harm to an individual.

In 1997 he attempted to kill one of the UNA-UNSO members in Kiev.

In 2003 Muzychko was sentenced to 3.5 years in prison for racketeering and kidnapping.

In 2009 he was accused in a hostile corporate raid.

In 2012 he ran for the national parliament in the 153rd electoral district (Rivne) placing sixth.

On February 27, 2014 Muzychko attacked the Prosecutor of the Rivne Oblast in his office and threatened to "slay as a dog" the Minister of Internal Affairs Arsen Avakov. 

On February 28, 2014 Russia opened criminal proceedings were against him.

1991. Muzychko has vowed to fight “communists, Jews and Russians for as long as blood flows in my veins”, and is accused of forcing members of the regional parliament of Rivne to hold a session at gunpoint on 25 February 2014 after he brandished a Kalashnikov assault rifle.

On 7 March 2014, ITAR-TASS reported that he is wanted by Russian authorities for war atrocities. 

On March 11, 2014 Russian State Duma deputy Valery Rashkin (ru) urged Russian special services to "follow Mossad examples" and assassinate leaders of Right sector Dmytro Yarosh and Oleksandr Muzychko.

On March 24 2014 a group of unknown armed people arrived on three Volkswagen minivans and kidnapped Muzychko and five other people from a cafe near Rivne.

They murdered Muzychko behind the cafe by gunshot to the heart.