Ronald J. Hackmaster was 35 when he disappeared from Sun City, Arizona. He was last seen on August 4, 1996, at his place of employment in the retirement community in Maricopa County. At the time he was described as a white male, brown hair, brown eyes, 5 feet 9 inches tall, about 200 pounds, with a tattoo of a woman’s head on his left arm. He may have been wearing a yellow shirt, khaki shorts and black tennis shoes.

His disappearance was reported to the Maricopa County Sheriff’s Office on August 8, 1996. The case produced few public leads; investigators later entered his information into NamUs in April 2014 and formally ruled him out as a match to skeletal remains found in South Mountain Park. An obituary for his father, who died in early 2024, lists Ron as having preceded him in death, but no public details about when or how Ronald Hackmaster might have died are provided.

If anyone remembers Ronald, his last known routines, coworkers, or sightings in Sun City in August 1996, investigators and the family would welcome that information.