The 2002–03 Primeira Liga was the 69th edition of top flight of Portuguese football. It started on 25 August 2002 with a match between Varzim and Paços de Ferreira, and ended on 1 June 2003. The league was contested by 18 clubs with Sporting CP as the defending champions.
Source: Primeira Liga
Rules for classification: 1st points, 2nd head-to-head, 3rd goals average 1 Leiria qualified for the UEFA Cup as Portuguese Cup runners-up (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. |}