The 2017–18 NBA G League season was the 17th season of the NBA G League (formerly the NBA D-League), the minor league for the National Basketball Association (NBA). It is the first season after the league rebranded to become the NBA G League as part of multi-year partnership with Gatorade.
The league retained its Eastern and Western Conferences, but realigned each conference into three divisions each. Along with the league expansion, the league also expanded its playoff field from eight teams to twelve. Each of the division winners and three wild cards per conference qualify. The top two seeds in each conference earn a bye over the first round.
The NBA announced a title sponsorship deal with Gatorade prior to the season, under which it has been renamed the NBA G League. The G League also experimented with new broadcast arrangements, including airing 120 games on Eleven Sports, and streaming games on the typically video game-oriented live streaming service Twitch, which included interactive stats, and commentary provided by prominent Twitch personalities.
On March 24, 2018, Grand Rapids Drive player Zeke Upshaw collapsed on-court during the final minute of the team's regular season finale. Two days later, Upshaw died at the age of 26. Autopsy reports indicated that Upshaw had died from a sudden cardiac arrest. The start of the NBA G League playoffs were delayed out of respect for Upshaw's death, and the NBA's Detroit Pistons gave Upshaw an honorary call-up to their roster.