Cary Anthony Stayner, also known as the Yosemite Park Killer or the Yosemite Killer, is an American serial killer and the older brother of kidnapping victim Steven Stayner. He was convicted of the murders of four women between February and July 1999. The murders occurred in Mariposa County, California, near Yosemite National Park. Stayner was sentenced to death for the four murders and is still on death row at San Quentin State Prison.

Steven Gregory Stayner was an American kidnapping victim and the younger brother of serial killer Cary Stayner. On December 4, 1972, seven-year-old Stayner was abducted in Merced, California, by child molester Kenneth Parnell. He was held by his abductor 38 miles (61 km) away in Mariposa County, and later in Mendocino County, until he was aged 14, when he managed to escape with another of Parnell's victims, five-year-old Timothy White.