Antwain Smith (born May 1, 1975 in Newport News, Virginia) is an American professional basketball player in the small forward position. He attended Saint Paul's College from 1995-1999.

Upon college graduation, Smith was selected with the 51st pick of the 1999 NBA Draft by the Vancouver Grizzlies, but never played a game with any NBA team. He went on to play in the IBL with St. Louis Swarm (1999-00, 2000–01) and Richmond Rhythm (2000–01) and the NBDL, for the Fayetteville Patriots (2001–02, started that season in Slovenia).

Antowain Drurell Smith (born March 14, 1972 in Millbrook, Alabama) is a former American Football running back in the National Football League who played nine NFL seasons, most notably with the New England Patriots. At 6'2", 230 lb (100 kg), Smith's powerful running style made him an effective runner between the tackles. Smith was also a leader in the locker room, and had underrated blitz pick-up and receiving skills.

Smith attended Stanhope Elmore High School in Millbrook, Alabama. As a senior running back, he was an All-District pick and won All-Conference honors.

Smith was a standout running back at East Mississippi Community College and the University of Houston.

Antowain Smith was drafted in the first round of the 1997 NFL Draft by the Buffalo Bills. In his rookie season Smith ran for 840 yards and 8 touchdowns with also catching 28 passes. The next season Smith ran for 1,124 yards and again scored 8 times, although his yards per carry dropped from 4.3 to just 3.7. Smith gained just 27 total yards in the Bills first round playoff loss in 1998. The next season was disappointing and saw Smith score 6 times while rushing for just 614 yards. He did manage to run for 79 yards and two scores in the Bill's first round playoff game but the Bills still lost to the Titans. Having fallen out of favor with the coaching staff Smith ran for just 354 yards and 4 touchdowns in 2000.

Antwain Britt (born May 9, 1978) is an American light heavyweight mixed martial artist.

Antwain Britt was a wrestler and football player in high school. After completing education he became interested in MMA. He made his debut in the heavyweight division but after a few fights dropped to light heavyweight. He was a contestant on The Ultimate Fighter 8, winning by majority decision over Ryan Jimmo, but was replaced by Eliot Marshall due to sustaining a broken hand in the fight. After beating UFC veteran Antonio Mendes at Shine Fights 1 - Genesis, Antwain took part in VFC: A Night Of Vengeance grand prix tournament. He beat another UFC veteran in Carmelo Marrero, and also beat Richard Hale but in the finals he lost to Rodney Wallace.

Britt signed with Strikeforce in September 2009. He currently trains with former pro boxer and Hybrid instructor Pete Yates. His Strikeforce debut came against Scott Lighty which Britt won by TKO.

Britt's next fight came against Rafael Cavalcante which Britt lost via KO (punches) at Strikeforce: Heavy Artillery.