Robert Alexander Greacen (born September 15, 1947) is an American former professional basketball player.

He averaged 2.6 points per game in his career and was a member of the Bucks NBA championship team in 1971.

Greacen played in the Eastern Basketball Association (EBA) for the Trenton Pat Pavers during the 1971–72 season.

[2] He also played in the renamed Continental Basketball Association (CBA) for the Lehigh Valley Jets during the 1979–80 season.

Source[3] This biographical article relating to a United States basketball player, coach, or other figure born in the 1940s is a stub.