Oleg Cassini, French-American fashion designer (d. 2006)
Oleg Cassini (11 April 1913 – 17 March 2006) was a fashion designer born to an aristocratic Russian family with maternal Italian ancestry. He came to the United States as a young man after starting as a designer in Rome, and quickly got work with Paramount Pictures. Cassini established his reputation by designing for films.

He became particularly well known as a designer for Jacqueline Kennedy while she was First Lady of the United States. The "Jackie Look" was to become highly influential and much admired. Among Cassini's inspirations were sports and Native American culture.