2018–19 S.L. Benfica season
| 2018–19 season | |||
|---|---|---|---|
| President | Luís Filipe Vieira | ||
| Manager | Rui Vitória (until 3 January 2019) Bruno Lage | ||
| Stadium | Estádio da Luz | ||
| Primeira Liga | 1st | ||
| Taça de Portugal | Semi-finals | ||
| Taça da Liga | Semi-finals | ||
| UEFA Champions League | Group stage | ||
| UEFA Europa League | Quarter-finals | ||
| Top goalscorer | League: Haris Seferovic (23) All: Haris Seferovic (27) | ||
| Highest home attendance | 64,064 v Santa Clara (18 May 2019) | ||
| Lowest home attendance | 16,454 v Arouca (22 November 2018) | ||
| Average home league attendance | 53,824 | ||
| Biggest win | Benfica 10–0 Nacional (10 February 2019) | ||
| Biggest defeat | Bayern Munich 5–1 Benfica (27 November 2018) | ||
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The 2018–19 season was Sport Lisboa e Benfica's 115th season in existence and the club's 85th consecutive season in the top flight of Portuguese football. It started with the UEFA Champions League third qualifying round on 7 August 2018 and concluded on 18 May 2019 with Benfica becoming Primeira Liga champions for a record 37th time.
Internationally, Benfica played in the Champions League group stage for the ninth successive time, a Portuguese record ranking fourth all-time. However, with two losses at Estádio da Luz, they set a domestic record of five consecutive home matches without a win in the competition. After finishing third in their group, they moved to the UEFA Europa League knockout phase, where they reached the quarter-finals.