The 2003 season was Santos Futebol Clube's ninety-first season in existence and the club's fifty consecutive season in the top flight of Brazilian football.

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

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Source: Match reports in Competitive matches

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Rules for classification: 1st points; 2nd wins; 3rd goal difference
(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.

Source: Competitive matches

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Ground: A = Away; H = Home. Result: D = Draw; L = Loss; W = Win; P = Postponed.

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