Robert Jacob Voskuhl (born November 1, 1977) is a retired American professional basketball player.

After attending Strake Jesuit College Preparatory, Voskuhl went to the University of Connecticut from 1996 to 2000, where he was the starting center on the school's 1999 NCAA National Championship team.

The Bulls were in a rebuilding era and were looking for young players to revitalize the franchise; Voskuhl had a good opportunity to become a key young role player on the team, however he didn't receive valuable minutes on the court and the Bulls would be an abysmal team until the 2004–2005 season.

The Suns managed to acquire superstar point guard Steve Nash in the 2004 off season, and immediately became an elite team.

The Suns made a deep playoff push, however once again lost to the rival San Antonio Spurs in 5 games.

In the 2006–07 season he saw more playing time than expected due to the exhaustion of Primož Brezec, and averaged 4.4 points per game.

Prior to the 2007–08 season, Milwaukee signed Voskuhl to a one-year, $3 million deal, as he battled for backup center to Andrew Bogut with Dan Gadzuric.