Luca Castellazzi is an Italian former professional footballer who played as a goalkeeper. He played for Brescia, Sampdoria, Torino and Internazionale. On 17 June 2010, Castellazzi joined UEFA Champions League and Serie A champions Internazionale on a free transfer, tying him to the club until 2012. He became one of the understudies to Júlio César along with Paolo Orlandoni and replaced the retired Francesco Toldo. During the 2010–11 season, Castellazzi played in all three major competitions – Serie A, Champions League and Coppa Italia – due to injuries afflicting the first-choice Júlio César.