Moses Shirief-Lamar Brown (born October 13, 1999) is an American professional basketball player for the Westchester Knicks of the NBA G League.

After going undrafted in the 2019 NBA draft, Brown spent his rookie season on a two-way contract with the Trail Blazers.

He joined the Oklahoma City Thunder on a two-way deal for 2020–21 before signing a multi-year, standard NBA contract during the season.

In his junior year, he led Molloy to the Catholic High School Athletic Association (CHSAA) finals, where the Stanners lost 64–62 in an upset by Cardinal Hayes.

[14] In the season opener, he scored 19 points on 9-of-10 shooting, including five slam dunks, and had 17 rebounds in a 96–71 win over Purdue Fort Wayne.

[a] On November 16, 2018, Brown had 23 points and 14 rebounds in a 95–58 win over Saint Francis to become the first UCLA freshman to record a double-double in his first three games.

[16][17] After facing smaller post players from small-program schools, Brown struggled offensively against Nick Ward of No.

[20][21] On January 26, 2019, Brown snapped out of a two-week slump with 11 points, 15 rebounds and two blocks to help the Bruins end a three-game losing streak in a 90–69 win over Arizona.

[22] He missed the regular season finale against Utah due to an unspecified violation of the school's student-athlete code of conduct.

[14] Brown finished the season averaging 9.7 points and a team-leading 8.3 rebounds, and ranked fourth in the Pac-12 Conference with 1.9 blocks per game.

[31] He was transferred back to Portland on November 9 amid multiple injuries to their frontcourt, including centers Pau Gasol and Jusuf Nurkić.

[37] On March 14, Brown made his first career start for the Thunder, replacing a resting Al Horford in a game against the Memphis Grizzlies.

[40][41] On March 27, Oklahoma City announced that Horford would sit out the rest of the season as the team prioritized developing its younger players.

[51] On February 10, 2022, he was waived by the Mavericks, freeing up a roster spot for them to land the players acquired in a trade that sent Kristaps Porziņģis to the Washington Wizards.

[51][52] On March 10, 2022, the Cleveland Cavaliers announced that they had signed Brown to a 10-day contract,[53] following an injury sustained by Jarrett Allen.

[60] He had been active for 50 NBA games, the limit for a two-way player, and the Clippers would have needed to sign him to an end-of-season contract to retain him.

Brown appeared in 34 games for the Clippers and made one start, averaging 4.6 points and 4.1 rebounds while making 63.5% of his field goals.