Markquis Morris Nowell (born December 25, 1999) is an American professional basketball player for the Rio Grande Valley Vipers of the NBA G League.

He was one of two players to return to Kansas State after Jerome Tang was hired as coach to replace Bruce Weber.

[6] On January 10, 2023, Nowell was named Oscar Robertson National Player of the Week by the U.S. Basketball Writers Association after scoring a career-high 36 points to go with nine assists and three steals in a 116–103 win against Texas.

[8] During the NCAA tournament, Nowell scored 17 points and recorded a then career-high 14 assists during a 77–65 first round win over Montana State.

[11] On March 25, Nowell scored 30 points and 12 assists in a losing effort against Florida Atlantic in the Elite 8 of the NCAA Tournament.