Yuliy Valeriyovych Mamchur (Ukrainian: ???? ??????????? ??????) is a colonel in the Ukrainian Air Force who, for three weeks in March 2014, refused to abandon his post in Belbek, Crimea amidst the Crimean crisis while surrounded and outnumbered by Russian forces.
Mamchur is also credited for restraining amiably and diplomatically both his soldiers and pro-Russian forces from escalating tensions further, asking both sides not to shoot each other while the situation defuses.
Mamchur became a national hero in Ukraine and is considered a hero by Western media outlets.
He is known to be calm, stoic and defiant.In the October 2014 Mamchur was elected into the Ukrainian parliament after being in the top 10 of the electoral list of Petro Poroshenko Bloc.
He was not re-elected in the 2019 Ukrainian parliamentary election.