Onassis refers primarily to the Greek shipping magnate, Aristotle Onassis, who became one of the wealthiest men in the world during the mid-20th century. He was known for his vast shipping fleet and his luxurious lifestyle, which included owning the famous yacht, Christina O. Onassis was also notable for his high-profile marriage to Jacqueline Kennedy, the widow of U.S. President John F. Kennedy. The Onassis legacy extends beyond shipping; it includes the Onassis Foundation, which supports education and culture. The foundation promotes Greek language and culture through various initiatives, scholarships, and cultural events, ensuring that Onassis's impact continues in the fields of arts and education.