Mariette Hartley (born 1940) is an American actor. She has had a long career in films and television. She co-starred in several short-lived TV series, including The Hero (with Richard Mulligan), Goodnight, Beantown (with Bill Bixby), and WIOU (with Dick Van Patten).
Ms. Hartley was one of the stars of the 1973 TV movie Genesis II, which was writer-producer Gene Roddenberry's next major attempt at a TV series following the cancellation of Star Trek. In it, Hartley played a member of a future society. Her character wore a midriff-baring outfit that displayed her two belly-buttons. This was referenced in Experiment #509.