Martha Elizabeth Moxley (August 16, 1960 – October 30 or 31, 1975) was a fifteen-year-old murder victim in a case that attracted worldwide publicity due to a "Kennedy connection".
Born in San Francisco, California to Dorthy and David Moxley, Martha and her family moved to Belle Haven, an exclusive section of Greenwich, Connecticut, in the summer of 1974, where she lived until her violent death 15 months later. Her group of friends included neighbors Thomas and Michael Skakel, nephews of Ethel Kennedy.
On the evening of October 30, 1975, Moxley left with friends to attend a Halloween party at the Skakel home, one block away. According to friends, Moxley began flirting with and eventually kissed Thomas Skakel. Moxley was last seen "falling together behind the fence" near the pool in the Skakel backyard at around 9:30 p.m.