1984 US Open – Women's singles

Defending champion Martina Navratilova defeated Chris Evert in a rematch of the previous year's final, 4–6, 6–4, 6–4 to win the women's singles tennis title at the 1984 US Open. It was her second US Open singles title and eleventh major singles title overall. The victory marked Navratilova's sixth consecutive major singles title, tying Margaret Court and Maureen Connolly's achievement. She became the first player to win the Surface Slam (winning majors on clay, grass, and hardcourt in the same year), having won the French Open and Wimbledon Championships. The final is considered one of the best matches in US Open history.

This marked the first major appearance of future champion Gabriela Sabatini; she was defeated in the third round by Helena Suková. Additionally, this was the main drawn debut of future 5-time US Open champion Steffi Graf.