Oleksandr Ivanovych Bilash (also spelt Olexandr Bilash, Alexander Bilash, Ukrainian: Олександр Іванович Білаш) (March 6, 1931 - May 6, 2003) was a Ukrainian composer and the author of popular lyric songs, ballads, operas, operettas, oratorios and music for films. Laureate of the Taras Shevchenko State Award (1975), People's Artist of Ukraine (1977), People's Artist of the Soviet Union (1990). Hero of Ukraine (2001).

Oleksandr Bilash was born on March 6, 1931 in the town of Hradizhsk, Ukraine (now Hlobinsky district of Poltava region, Ukraine ) to a family of skilled amateur musicians. His father, Ivan Panasovych Bilash, played balalaika and guitar; his mother, Yevdokiya Andriyivna, was a solo singer at rural gatherings.

After studying for a year in the Kiev music school for adults, Oleksandr traveled to the city of Zhytomyr where he entered the second year of the Viktor Kosenko Music School. In 1951, Bilash had successfully passed the entrance examinations for entry into the faculty of Composition of the Kiev State Conservatory (now The Tchaikovsky National Academy of Music). He studied composition with the outstanding Ukrainian composer and teaching professor Mykola Vilinsky. Oleksandr Bilash graduated from the Kiev State Conservatory in 1957.