Paris Saint-Germain Football Club, commonly referred to as Paris Saint-Germain (French: [paʁi sɛ̃ʒɛʁmɛ̃]) or simply PSG, is a French professional football club based in Paris. They compete in Ligue 1, the top division of French football. With 52 major trophies won, PSG are the most decorated club in France and are generally considered the country's biggest club.

Founded in 1970, following the merger of Paris FC and Stade Saint-Germain, PSG have the most consecutive seasons playing in France's top flight. They are the most popular football club in France and one of the most widely supported teams in the world. They are nicknamed the Les Rouge-et-Bleu (The Red-and-Blues), for the shirt colour that also includes white, and their crest features the Eiffel Tower and a fleur-de-lis. The team has a longstanding rivalry with Marseille, against whom they contest Le Classique. PSG have played their home matches in the 48,000-capacity Parc des Princes in Paris since 1973, located in the 16th arrondissement of Paris near the Boulogne-Billancourt commune.

They won their first major honour, the French Cup, in 1982 and their first Division 1 title in 1986. The 1990s was among the most successful periods in the club's history. After suffering a decline in fortunes during the 2000s, the Red and Blues have enjoyed a revival since 2011 when they were taken over by Qatar Sports Investments. With considerable financial investment, allowing the club to buy superstar players such as Zlatan Ibrahimović, Neymar, Kylian Mbappé and Lionel Messi, the team achieved dominance in domestic competitions, winning multiple league titles and national cups, but underperformed in the UEFA Champions League. Following a shift away from a star-centric model to a team-first approach and younger prospects, the club won its first Champions League in 2025 as part of a continental treble.

PSG have won 49 domestic trophies: a record 13 Ligue 1 titles, a record 16 Coupes de France, a record 9 Coupes de la Ligue, and a record 13 Trophées des Champions. Internationally, they won the UEFA Champions League in 2025, becoming the second French club to win the title; they were runners-up in 2020. Additional international trophies include the UEFA Cup Winners' Cup in 1996 and the UEFA Intertoto Cup in 2001. PSG is one of two French clubs to have won a major European title.

Since 2011, PSG have been majority-owned by Qatari government-backed investment fund Qatar Sports Investments, which held 87.5% of the shares by 2012 while American investment firm Arctos Partners owned the remaining 12.5%. PSG are the richest club in France and one of the wealthiest in the world. In January 2025, PSG had the third-highest revenue in the footballing world with annual earnings of €806m according to Deloitte, and were the world's seventh-most valuable football club, worth $4.4bn according to Forbes.