Oskar Fried (1 August 1871 – 5 July 1941) was a German conductor and composer. He was known as a great admirer of Gustav Mahler, whose works he performed many times throughout his life. Fried was also the first conductor to record a Mahler symphony. He held the distinction of being the first foreign conductor to perform in Russia after the Bolshevik Revolution (1922). He eventually left his homeland in 1933 to work in the Soviet Union after the political rise of Adolf Hitler's Nazi Party, and became a Soviet citizen in 1940.

In 1899, Fried married the amateur poet Augusta (Gusti) Rathgeber (1872–1926) and had two daughters with her, Monika and Emerentia (dates are unknown). From 1892, Gusti Rathgeber had been married to German poet Otto Julius Bierbaum but left him when she and Fried met, and fell in love with each other.