Dallas Mavericks All-Stars
12 players
12 players were All-Stars in a season with the Dallas Mavericks. Dirk Nowitzki did it the most, 14 times (2002–2012, 2014–2015, 2019). On a roster now: Luka Doncic, Kyrie Irving, and Anthony Davis.
Selections from Wikipedia's list of NBA All-Stars; a player counts for each club he played for that season. Seasons are on file in full from 1993-94; before that only some of the stars are, so an older name can be missing.