Andrés Gómez defeated Andre Agassi in the final, 6–3, 2–6, 6–4, 6–4 to win the men's singles tennis title at the 1990 French Open. It was his first and only major singles title. He became the first Ecuadorian, male or female, to win a major. Agassi would later write in his 2009 autobiography that he spent much of the final worried his wig would fall off. Michael Chang was the defending champion, but he was defeated by Agassi in the quarterfinals. For the first time since the December 1977 Australian Open, none of the semifinalists had previously won a major title. World number one, Ivan Lendl, elected to skip the tournament to prepare early for Wimbledon. Until the 2002 Australian Open, this would be the last time that the top two seeds would lose in the first round of a major, with Stefan Edberg and Boris Becker losing to Sergi Bruguera and Goran Ivanišević respectively.

Seeds

• # 🇸🇪 Stefan Edberg (first round) • # Boris Becker (first round) • # 🇺🇸 Andre Agassi (final) • # 🇪🇨 Andrés Gómez (champion) • # 🇺🇸 Aaron Krickstein (third round) • # 🇪🇸 Emilio Sánchez (first round) • # 🇦🇹 Thomas Muster (semifinals) • # Andrei Chesnokov (fourth round) • # 🇺🇸 Jay Berger (first round) • # 🇦🇷 Martín Jaite (fourth round) • # 🇺🇸 Michael Chang (quarterfinals) • # 🇪🇸 Juan Aguilera (second round) • # 🇺🇸 Jim Courier (fourth round) • # 🇸🇪 Magnus Gustafsson (fourth round) • # 🇦🇷 Guillermo Pérez Roldán (fourth round) • # Carl-Uwe Steeb (withdrew)

Draw

Finals

Top half

Section 1

Section 2

Section 3

Section 4

Bottom half

Section 5

Section 6

Section 7

Section 8