Guilherme Giovannoni (born June 2, 1980) is a Brazilian former professional basketball player.

He played at the power forward position for several clubs in Brazil and Europe.

During his pro career, Giovannoni has played with UniCEUB/BRB and several other clubs in the top-tier level Brazilian League.

[1] Giovannoni has competed with the senior men's Brazilian national basketball team, at the 2002, 2006, 2010, and 2014 FIBA World Cups.

This biographical article relating to a Brazilian basketball figure is a stub.