He beat Spain and Barcelona forward Lamine Yamal, with his PSG teammate Vitinha taking third place.
Dembele’s prize was one of several for PSG, who won the treble of Champions League, Ligue 1 and the French Cup.
Ousmane Dembele was named the world’s best player of the season as he claimed the Ballon d’Or on a night of triumph for his Paris St Germain club, while Barcelona's Aitana Bonmati, a serial trophy winner, claimed the women's award on Monday.
The 28-year-old France forward Dembele, who needed time and the guidance of PSG coach Luis Enrique to fulfill his potential as he inspired the capital club to their first Champions League title last season, became the sixth French player to lift the award and the first since Karim Benzema in 2022.