Jack Ryan Cooley (born April 12, 1991) is an American professional basketball player for Ryukyu Golden Kings of the Japanese B.League.

Cooley was a three-year starter at Glenbrook South High School and averaged 20.7 points and 11.2 rebounds per game during his junior season.

[1] Before his senior season, Cooley was named to the Naismith Award top fifty early-season watch list.

[13] Following the conclusion of his 10-day contract on March 6, he was not retained by the Jazz[14] and subsequently returned to the Stampede, playing for them that night.

[15] He went on to set a new NBA D-League single-game record by grabbing 29 rebounds against the Los Angeles D-Fenders on March 13.

On December 4, he received a contract buyout from Idaho and signed for the rest of the season with the Spanish club Unicaja of the Liga ACB and the Euroleague.

Under the terms of the deal, for the 2017–18 season, he will split time between the Kings and their G-League affiliate, the Reno Bighorns.

[25] On July 27, 2018, Cooley signed a one-year deal with the Italian club Dinamo Sassari of the LBA.