I couldn’t find an “official” source, but some people suggested 7’3" gold medalist Arvydas Sabonis is currently the tallest.
If you include the Paralympics, 8’1" sitting volleyball gold medalist Morteza Mehrzad is almost certainly the tallest, as he’s the second tallest living person.
This a weird stat creation
The tallest human to ever be an Olympic medalist is a pretty solid and interesting stat Id say.