Mbappé signed for Paris Saint-Germain on an eventual permanent transfer worth €180 million, making him the second-most-expensive player and most expensive teenage player of all time.

With PSG, Mbappé won six Ligue 1 titles, four Coupes de France, and led the club to its first UEFA Champions League final in 2020. He became the club's all-time top goalscorer and set numerous records, including being the youngest player to score 100 goals for a single team in Ligue 1.

Mbappé extended his contract with PSG until 2025, despite speculations of a transfer to Real Madrid.

Mbappé announced that he would depart Paris Saint-Germain at the end of the season.

Mbappé played his final match for PSG, featuring in the entirety of the Coupe de France final victory over Lyon.