Justin Lamar Anderson (born November 19, 1993) is an American professional basketball player for FC Barcelona of the Spanish Liga ACB and the EuroLeague.

[1][2] Anderson attended Montrose Christian School where he averaged 17.8 points, 4.7 rebounds, 3.0 assists, 1.8 steals and 1.6 blocks per game as a senior and won several awards, among them, the Gatorade Maryland Boys Basketball Player of the Year.

After putting up career-high numbers in scoring and other offensive categories, Anderson was named second-team All-ACC and third-team All-American by the NABC.

[7] He made his debut for the Mavericks in their season opener on October 28, 2015, recording two points and one rebound in a 111–95 win over the Phoenix Suns.

[12] In July 2016, Anderson re-joined the Mavericks for the 2016 NBA Summer League, where he averaged 16.0 points, 7.0 rebounds and 2.6 assists in five games.

[14] On February 23, 2017, Anderson was traded, along with Andrew Bogut and a protected first-round pick, to the Philadelphia 76ers in exchange for Nerlens Noel.

[15] On March 3, 2017, he made the go-ahead basket with 24.3 seconds left and matched his career high with 19 points in the 76ers' 105–102 victory over the New York Knicks.

[20] On July 25, 2018, Anderson was traded to the Atlanta Hawks in a three-team deal involving the 76ers and the Oklahoma City Thunder.

On September 23, 2021, the Fort Wayne Mad Ants acquired the rights to Anderson in a trade with the Long Island Nets.

[3] Anderson is a member of the "Starting Five", along with Malcolm Brogdon, Joe Harris, Anthony Tolliver, and Garrett Temple.

[43] Anderson traveled with Brogdon and Harris to Tanzania to witness the opening of the first well they funded in July 2019, and by November Hoops2O had raised nearly $400,000.

[44][45] By February 2020, the charity had funded the construction of ten wells in Tanzania and Kenya, bringing water to over 52,000 citizens.