Qualifications Liguria Classification Rivarolese was demoted by the
Federazione Italiana Giuoco Calcio after incidents caused by its supporters during the match Rivarolese-
Savona (0–2). Rivarolese's remaining matches were all considered forfeits. The side was readmitted to the championship for the following season.
Results table Piedmont Group A ;Classification ;Results Table ;Leadership playoff :
Played on 13 March 1921 in Alessandria. Group B ;Classification ;Results Table
Qualification playoff :
Played on 20 February 1921 in Vercelli. ;Repetition :
Played on 20 March 1921 in Vercelli. US Torinese qualified for the Northern Italy semifinals. Casale resigned from the
FIGC.
Regional final :
Played on 20 March 1921 in Turin. • Alessandria Champions of Piedmont 1921
Lombardy Group A ;Classification ;Results Table
Group B ;Classification ;Results Table
Group C ;Classification ;Results Table ;Relegation playoff :
Played on 5 December 1920 in Busto Arsizio. Group D ;Classification ;Results Table ;Relegation playoff :
Played on 5 December 1920 in Saronno. The match was voided due to irregularities. ;Repetition :
Played on 19 December 1920 in Saronno. Group E ;Classification ;Results Table
Group F ;Classification ;Results Table
Final round ;Classification ;Results Table
Veneto Group A ;Classification ;Results Table • The home teams are read down the left hand side while the away teams are indicated along the top.
Group B ;Classification ;Results Table • The home teams are read down the left hand side while the away teams are indicated along the top.
Relegation playoff :
Played on 27 February 1921 in Padua. Final round ;Classification ;Results Table • The home teams are read down the left hand side while the away teams are indicated along the top.
Emilia Group A ;Classification ;Results table
Group B ;Classification ;Results table
Regional Finals :''Played on 6 February and 13 March 1921 to determine
Emilia's regional champion.'' Since the aggregate rule wasn't applied, a tie-breaker was needed. ;Tie-breaker :
Played on 3 April 1921 in Ferrara. Qualification play-off :
Played on 2 and 20 February 1921. Relegation playoff :
Played on ? in ?. Semifinals Group A Classification Results table Group B Classification Results table Qualification playoff :
Played on 3 July 1921 in Milan. Group C Classification Results table Qualification play-off :
Played on 26 June 1921 in Vercelli. A tie-breaker was due, but both Legnano and Torino decided to retire from the championship and to resign from the FIGC.
Group D Classification Results table Finals Round 1 :
Played on 10 July 1921 in Turin. Bologna F.C. advanced directly to Round 2 due to
Torino and
Legnano's retirement. Alessandria resigned from the FIGC.
Round 2 :
Played on 17 July 1921 in Livorno. Bologna resigned from the FIGC. ==Southern Italy tournament==