Guillermo Federico Kammerichs (born June 21, 1980) is an Argentine retired professional basketball player, who last played with Unión de Goya.

Some of the clubs Kammerichs played with professionally included: Ferro Carril Oeste of the Argentine League (1998–01), Ourense of the Spanish Second Division (2001–02), Valencia (2002–05), Girona (2005–06), Bruesa GBC (2006–07), Murcia (2007–08) of the Spanish First Division, and Flamengo of the Brazilian League (2011–12).

He went back to Argentina after a year, at the end of his season with Flamengo, to play again with Regatas.

Kammerichs was selected by the Portland Trail Blazers in the 2nd round (51st pick overall) of the 2002 NBA draft but ended up never playing in a single NBA game (making him 1 of 9 players selected in that draft that never played in the league).

They brought home a bronze medal at both the 2008 Summer Olympic Games.