The women's 3 metre springboard diving competition at the 2020 Summer Olympics in Tokyo was held from 30 July to 1 August 2021 at the Tokyo Aquatics Centre.

Each dive was assigned a degree of difficulty based on somersaults, position, twists, approach, and entry.

There was no limit to the degree of difficulty of dives; the most difficult dives calculated in the FINA rulebook (reverse 4 1⁄2 somersault in pike position and back 4 1⁄2 somersault in pike position) were 4.7, but competitors could attempt more difficult dives.

For each dive, each judge gave a score between 0 and 10 with 0.5 point increments.

Additional quota places go to the next best finishers in the 2020 FINA World Cup (with the same limitations) until the maximum number of divers is reached.