David Wayne Nilsson is an Australian former professional baseball catcher and current manager of the Australia national baseball team and the Brisbane Bandits. He played for Major League Baseball's Milwaukee Brewers from 1992 to 1999 and was an All-Star in 1999, becoming the first Australian player to appear in an All-Star game. He ended his Major League career on 3 October 1999 with 837 games played, 789 hits, 105 home runs and a .284 career batting average.

The Australian national baseball team represents Australia in international baseball tournaments and competitions. It is ranked as the top team in Oceania, and is the Oceanian Champion, having been awarded the title in 2007 when New Zealand withdrew from the Oceania Baseball Championship. After achieving a last (16th) place in the 2013 World Baseball Classic, its rank dropped to 13, which is the lowest rank Australia ever received. The highest rank it has achieved is 6th, and its current rank is 10th.