Basketball contests at the 2000 Summer Olympics was the fifteenth appearance of the sport of basketball as an official Olympic medal event.

Games took place at the Sydney SuperDome and the Dome in Sydney, New South Wales, Australia.

The United States earned the gold medals in both the men's and women's competitions.

Shareef Abdur-Rahim Ray Allen Vin Baker Vince Carter Kevin Garnett Tim Hardaway Allan Houston Jason Kidd Antonio McDyess Alonzo Mourning Gary Payton Steve Smith Jim Bilba Yann Bonato Makan Dioumassi Laurent Foirest Thierry Gadou Cyril Julian Crawford Palmer Antoine Rigaudeau Stéphane Risacher Laurent Sciarra Mustapha Sonko Frédéric Weis Dainius Adomaitis Gintaras Einikis Andrius Giedraitis Šarūnas Jasikevičius Kęstutis Marčiulionis Tomas Masiulis Darius Maskoliūnas Ramūnas Šiškauskas Darius Songaila Saulius Štombergas Mindaugas Timinskas Eurelijus Žukauskas Ruthie Bolton-Holifield Teresa Edwards Yolanda Griffith Chamique Holdsclaw Lisa Leslie Nikki McCray DeLisha Milton Katie Smith Dawn Staley Sheryl Swoopes Natalie Williams Kara Wolters Carla Boyd Sandra Brondello Trisha Fallon Michelle Griffiths Kristi Harrower Jo Hill Lauren Jackson Annie la Fleur Shelley Sandie Rachael Sporn Michele Timms Jenny Whittle Janeth Arcain Ilisaine David Lilian Gonçalves Helen Luz Silvia Luz Claudia Neves Alessandra Oliveira Adriana Pinto Adriana Santos Cintia Santos Kelly Santos Marta Sobral A National Olympic Committee (NOC) may enter up to one men's team with 12 players and up to one women's team with 12 players.

The reigning world champions and the host country qualify automatically, as do the winners of the five continental championships, plus the Americas runner-up and four additional berths from Europe in the men's competition, and the second and third place from the Americas tournament plus three additional squads from Europe in the women's competition.