|Full name||Armando Castellazzi|
|Date of birth||October 7, 1904|
|Place of birth||Milan, Italy|
|Height||1.84 m (6 ft 0 in)|
* Senior club appearances and goals counted for the domestic league only.
Born in Milan, Castellazzi spent his entire club career in the 1920s and 1930s playing for Ambrosiana-Inter in Serie A. He played 182 matches for the team, scoring two goals, helping the club to win the 1929–30 Serie A championship.
After retiring from football at the age of 32, Castellazzi remained with the Ambrosiana-Inter organization where in 1938 he became the first person in the history of the first division to win the championship both as a player and as a coach.