List of NBA Cup champions

The NBA Cup is a National Basketball Association (NBA) regular season tournament introduced during the league's 2023–24 season. The very first iteration was called the NBA In-Season Tournament, but was officially renamed later that same season. The tournament itself and the trophy awarded are both called the NBA Cup.

The format is a multi-stage tournament beginning with group play followed by single-elimination knockout rounds. Group play consists of three groups of five teams per conference (a total of six groups). Each team plays four designated regular season games (two at home and two on the road) which count towards the group stage standings. The winners in each group, along with one wild card second place team from each conference, then advance to the knockout rounds. The final two rounds of the knockout stage are played at a neutral site. The winning team receives the NBA Cup, and each winning player receives $500,000. , the first and defending champions are the Los Angeles Lakers.

Champions

 * The first parentheses in the Western champions and Eastern champions columns indicate the teams' playoff seed. The second parentheses indicate the number of times that teams have appeared in an NBA Cup Finals as well as each respective team's Finals record to date.