Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) head-to-head goals scored; 5) goal difference; 6) number of goals scored. 1Casale end Legnano promoved for the 1930-31 Serie A end Biellese, Reggiana, Prato end Fiumana(-1) point deduced relegated to 1930-31 Prima Divisione. (C) = Champion; (R) = Relegated; (P) = Promoted; (E) = Eliminated; (O) = Play-off winner; (A) = Advances to a further round.
Only applicable when the season is not finished: (Q) = Qualified to the phase of tournament indicated; (TQ) = Qualified to tournament, but not yet to the particular phase indicated; (RQ) = Qualified to the relegation tournament indicated; (DQ) = Disqualified from tournament.
Head-to-Head: used when head-to-head record is used to rank tied teams.
Source: Almanacco Illustrato del Calcio - La Storia 1898-2004, Panini Edizioni, Modena, September 2005 (Italian)
1 ^ The home team is listed in the left-hand column. 2La Dominante renamed A.C. Liguria at the end of the season. Colours: Blue = home team win; Yellow = draw; Red = away team win.
For coming matches, an a indicates there is an article about the match.