The 1991 Virginia Slims Championships was the season-ending women's tennis held on indoor carpet courts at the Madison Square Garden in New York, United States between November 18 and November 24, 1991. It was the 21st edition of the end-of-season event, eligible for the top-ranked singles and doubles players on the Women's Tennis Association (WTA) tour. First-seeded Monica Seles won her second consecutive singles title at the event.[1]
See main article: 1991 Virginia Slims Championships – Singles. Monica Seles defeated 
Martina Navratilova 6–4, 3–6, 7–5, 6–0
See main article: 1991 Virginia Slims Championships – Doubles. Martina Navratilova / Pam Shriver defeated Gigi Fernández / Jana Novotná 4–6, 7–5, 6–4