Yoko Ono

John Lennon and Yoko Ono at the first day of their Bed-In for Peace in the Amsterdam Hilton Hotel.

Yoko Ono is a Japanese artist and peace activist, known for her work in avant-garde art, music and filmmaking and for her marriage to John Lennon (1969–1980). Ono brought feminism to the forefront in her music. She is also known for her philanthropic contributions to arts, peace and AIDS outreach programs. Lennon called her “the most famous unknown artist in the world.”