Alpha Saliou Diallo[1] (born June 29, 1997) is an American-born Guinean professional basketball player for AS Monaco of the French LNB Pro A and the EuroLeague.

[3] He played at Denver West High School as a sophomore and led the team to the Sweet 16 in the Class 4A tournament.

Diallo was ranked the 95th best player in his class and signed with Providence after Junior Lomomba's transfer opened up a scholarship.

[14] During the very successful 2020–2021 campaign, where the club reached the Greek Basket League finals for the first time, Diallo averaged 12.9 points, 5.4 rebounds, 2 assists, and 1.5 steals per game.

On July 24, 2021, Diallo signed a three-year contract with Greek Basket League champions and EuroLeague mainstays Panathinaikos.

[18] In the summer of 2019, Diallo was a part of the United States National team who competed at the Pan American Games in Peru.