Metro police spokesman Gene Harley was not able to immediately disclose how the man died, nor could Harley provide the man's identity or age.
"However," Harley said in a news release, "police are treating this incident as a homicide."
The police spokesman said that about 3:30 p.m. Thursday, metro police were dispatched to Hutchinson Island after a passer-by found the man's body on a desolate dirt road and called to report it.
Officers responded and found the dead man about one-half a mile down a dirt road labeled on some maps as International Drive, which stretches the length of the island west of the Talmadge Bridge.
Police did not know whether the man died on the island or if his body was dumped there.
The news release also stated that police are interviewing potential witnesses and following leads.
Harley said there were no updates as of 9 p.m. Thursday.
This is the 15th homicide handled by metro police so far this year. And it meant another long night for homicide detectives.
Nearly 24 hours prior to the discovery of the man's body on Hutchinson Island, Cameron Holmes, 18, was mortally wounded in a hail of gunfire in the eastside Sunrise Villas apartment complex.
He died on the way to Memorial University Medical Center.
Harold Grant, 21, also was taken to Memorial from the Sunrise Villas site, suffering non-life-threatening wounds. Thursday night, he was not listed as a patient, said Memorial spokesman Aaron Latham.
The metro area logged another homicide last Saturday morning when a bicyclist found Marcus Allen, 21, dead on the front lawn of the Southside Assembly of God, 401 Tibet Ave.
Metro police continue to pursue information on at least 12 unsolved slayings this year. At last report, a Jan. 19 shooting that claimed the life of a man a day later was still being reviewed by the Chatham County District Attorney's Office.
All but one homicide this year have involved gun violence. At this time last year, files show 12 homicides had been reported.
Harley and investigators have said they're frustrated with the lack of cooperation shown by several people who witnessed some of this year's homicides.
He urged anyone with details in any slaying to contact metro police homicide detectives at 651-6728 or CrimeStoppers at 234-2020.