|Full name||Armando Castellazzi|
|Date of birth||7 October 1904|
|Place of birth||Milan, Kingdom of Italy|
|Date of death||4 January 1968(aged 63)|
|Place of death||Milan, Italy|
|Height||1.84 m (6 ft 0 in)|
|Playing position||Midfielder, Full-back|
|* 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. His club debut came on 6 October 1929, in a 2–1 away win over Livorno.
With the Italian national team, Castellazzi made three appearances between 1929 and 1934; he made his international debut on 1 December 1929, in a 6–1 friendly home win over Portugal in Milan, and later appeared in a 4–2 friendly home win over Switzerland in Rome, on 9 February 1930. He also made one appearance – his final international cap – in the team's victorious 1934 FIFA World Cup campaign on home soil, starting in the first quarter-final against Spain, held in Florence, on 31 May, which ended in a 1–1 draw.
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.
- "1934 FIFA World Cup Italy: Italy 1-1 Spain". FIFA. Retrieved 11 January 2018.
- Profile at Enciclopedia del Calcio (in Italian)
- Profile at FIGC (in Italian)
- La Gazzetta dello Sport (in Italian)
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