Oscar Byström (31 December 1857 – 4 June 1938) was a Swedish actor.
Byström debuted in 1884 at the Royal Dramatic Theatre.
During 1885–1886, when he was involved in the theater company of Oscar Sternvall-Skottes .
Byström was employed at the Royal Dramatic Theatre from 1890 to 1893.
His career in film started with a small role in Gösta Berlings saga (1924).