Oleg Caetani (born 1956) is an Italian conductor. 　　He was born in Lausanne, Switzerland, the son of the conductor and composer Igor Markevitch and his second wife Donna Topazia Caetani (1921—90), who is descended from a Roman family that included the early 14th-century Pope Boniface VIII. Caetani has chosen to use his mother's family name to continue its lineage.