Guillermo Gonzalo Suarez Giacomazzi is an Uruguayan football player who currently features for the Italian Serie A club US Lecce. He plays as a midfielder.
Guillermo Giacomazzi commenced his professional club football at Uruguayan club Bellavista in 1998. He scored 10 goals in 53 league appearances and moved to Penarol in 2000.
In 2001 Guillermo Giacomazzi moved to Italian club US Lecce and made his debut for them against Parma on August 27,2001. He went onto play for six seasons for Lecce, becoming the captain and scoring 25 goals in 156 league matches.
On January 31,2007 Giacomazzi was signed by Palermo. In February 2007 he played his first Italian Serie A match for Palermo against Empoli.
He played the next season on loan to Empoli and returned to Lecce in the summer of 2008.