William Kendrick Gregory (born November 16, 1978) is an American former professional basketball player.

Despite a very large wingspan for a guard of 6'11" (2.11 m) and some very impressive athletic scores at the 2001 NBA pre-draft camp, such as recording the highest no-step vertical jump (40") and the highest maximum vertical jump (46") that have ever been measured at the camp, Gregory went undrafted in the 2001 NBA draft.

He then moved to Italy for the 2003–04 season to the team Nuova Pallacanestro Pavia, of the Italian Second Division League.

He moved to the French League for the 2005–06 season, to the team Le Mans Sarthe Basket.

[2] Gregory moved to the Greek League club PAOK BC for the 2008–09 season.