Ousmane Diomande is a 23-year-old professional football player from CIV. He currently plays for Sporting CP, wearing the number 26 shirt. At the international level, he represents Cote d'Ivoire. He plays primarily as a Defender. He stands at 190cm tall and weighs 85kg. His current market value is estimated at 45M €.

His most recent move was a Free from Midtjylland to Sporting CP on 2023-01-31. The reported fee was 14.5M €.

Throughout the Primeira Liga 2025-2026, Ousmane Diomande featured in 14 matches, averaging 0.6 tackles, 0.7 interceptions, and 3.1 clearances per game, while blocking 0.2 shots per game.