List of S.L. Benfica seasons

Sport Lisboa e Benfica, commonly known as Benfica, is a Portuguese professional football team based in Lisbon. The club was formed in 1904 as Sport Lisboa and played its first competitive match on 4 November 1906, when it entered the inaugural edition of the Campeonato de Lisboa.

This page includes Benfica seasons in Portuguese football and UEFA competitions (plus the Latin Cup and the Inter-Cities Fairs Cup) from the first to the last completed season. Moreover, it details the team's achievements in major competitions, as well as the top goalscorers for each season.

Key
Table headers
 * Pos – Final position in the league classification
 * Pld – Number of league matches played
 * W – Number of league matches won
 * D – Number of league matches drawn
 * L – Number of league matches lost
 * GF – Number of goals scored in league matches
 * GA – Number of goals conceded in league matches
 * Pts – Number of points at the end of the league

Divisions
 * Regional – Lisbon regional championship

Results and rounds
 * 1st or W – Champions or Winners
 * 2nd or RU – Runners-up
 * SF – Semi-finals
 * QF – Quarter-finals
 * R16, R32, R64 – Round of 16, 32, and 64
 * 1R, 2R, 3R, 4R – First, second, third, and fourth round
 * GS – (First) Group stage
 * 3Q – Third qualifying round
 * PR – Preliminary round

Top scorers
 * Players whose name is in italics were also the regional championship or Primeira Liga top scorers.
 * GS – Players who were also top scorers in Europe (European Golden Shoe).