1. Yoko Ono
Yoko Ono is a Japanese artist, peace activist, filmmaker, musician, pianist and singer – not to mention a former wife of John Lennon – besides her art, Yoko is also known for launching and managing numerous philanthropic programs, most notably- campaigns against war and HIV outreach programs. As for 2013 Yoko Ono’s net worth was estimated at $500 million, or £318 million making the artist one of the richest woman in the world.