Timothy Jack "Tim" McCoy (May 14, 1955 - c. January 2, 1972) was the first-known victim of serial killer John Wayne Gacy. He was known as Body 9 or the "Greyhound Bus Boy" while unidentified.
McCoy was stabbed to death in early January 1972 in Gacy's home and subsequently buried in the crawlspace under the kitchen floor. McCoy had spent the night at Gacy's house on Gacy's suggestion. The two met at a bus terminal in Chicago and McCoy was returning home after a Christmas celebration with friends in Michigan. His body was discovered along with many other victims of Gacy in December 1978 after the police executed a search warrant for Gacy's house as part of the investigation into the whereabouts of Robert Piest, Gacy's last victim.
He was identified in 1986 via dental records.