Ahead of the 1999 season, Gibson signed with the Cincinnati Bengals, where he became a full-time starter. He started all 48 games over the next three seasons. In 2002, injuries limited him to nine games, and he returned to a reserve role in 2003 -- his final year in the league.

Oliver Gibson, a long-time NFL lineman, passed away on 29 June 2025. His family confirmed the news, but no cause of death has been made public, according to the Daily Mail. There were no reports of illness,