Charles Olejniczak (7 August 1931 â 8 September 2025), better known by the stage name Charly Oleg, was a French organist, pianist, composer and orchestra conductor.
Born in Hayange on 7 August 1931 into a family with Polish origins, Olejniczak grew up in Nilvange. He attended the and was a pianist for the French Armed Forces during his military service. At the age of 20, he accompanied Josephine Baker on a tour through London and took over when she got sick. He later worked with Mireille Mathieu and Charles Aznavour.
On 27 February 1970, Olejniczak appeared on the television show ' on . From 1979 to 1982, he was the head conductor at the Théâtre de la Renaissance and directed opérettes such as Dédé alongside Georges Guétary, , . In 1988, he held a small role in the film The Unbearable Lightness of Being. In 1998, he had an uncredited role in .
Charly Oleg died in Le Blanc-Mesnil on 8 September 2025, at the age of 94.