Carsten Thomas Ball[1] (born 20 June 1987) is an American-Australian retired professional tennis player.

Although born and based in the United States, Carsten has represented Australia on tour.

As a junior tennis player he reached a career high of number 9 in the world.

Later in August he qualified for the US Open, where he reached the second round, losing to Novak Djokovic in straight sets.

Ball enjoyed considerable success as a doubles player, often partnering with fellow Australian Chris Guccione.