Bodybuilding superstar Shawn Rhoden ain't giving up on a return to the Mr. Olympia contest ... he tells TMZ Sports, "I'll be back competing in no time."
Rhoden famously beat legendary bodybuilder Phil Heath for the Mr. Olympia title last year ... but he was banned from this year's contest after he was accused of rape.
But, Rhoden -- who VEHEMENTLY denies the allegations -- says he's not giving up on his quest to win Mr. Olympia again, telling us this week that he's still working in the gym.