Hassan Olawale Adams (born June 20, 1984) is an American professional basketball player who last played for the Singapore Slingers of the ASEAN Basketball League (ABL). He played college basketball for Arizona.

Adams attended Westchester High School in Westchester, Los Angeles, where he averaged 18 points, 5 rebounds and 3 assists while leading his team to a 32–2 record, the California State Division I-A Championship, and a USA Today No. 1 ranking in his senior year. A McDonald's All-American and second team Parade All-America pick. Named California Mr. Basketball, the first guard to receive the honor since Baron Davis in 1997.

Adams played collegiately at the University of Arizona from 2002 to 2006. Adams played primarily at the small forward position under coach Lute Olson and wore number 21 throughout his collegiate career. He was named All-Pac-10 First Team in 2006.

In the 2006 NBA draft, Adams was selected by the New Jersey Nets in the second round with the 54th pick. In pre-draft workouts, Adams was injured after Texas forward P. J. Tucker stepped on his foot. Adams made the Nets roster and in his rookie year and started eight games, finishing with 61 played games that season. He scored his first points on November 24. On November 29, 2006, Adams scored a career-high 16 points against the Boston Celtics in 23 minutes of playing time. On July 14, 2007, the Nets waived Adams.

Adams worked out with the Cleveland Cavaliers and played in three preseason games for the Cavs, averaging 2.7 ppg, 0.7 rpg and 0.3 apg in 6.3 mpg. On October 27, 2007, the Cavs waived him.

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