| Competition: | Primeira Liga |
| Season: | 2001–02 |
| Dates: | 10 August 2001 – 5 May 2002 |
| Winners: | Sporting CP 18th title |
| Relegated: | Salgueiros Farense Alverca |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Sporting CP (third qualifying round) Boavista (second qualifying round) |
| Continentalcup2: | UEFA Cup |
| Continentalcup2 Qualifiers: | Porto (first round) |
| Continentalcup3: | Intertoto Cup |
| Continentalcup3 Qualifiers: | Belenenses (second round) União de Leiria (first round) Santa Clara (first round) |
| League Topscorer: | Mário Jardel (42 goals) |
| Biggest Home Win: | União de Leiria 7–0 Salgueiros (9 December 2001) |
| Biggest Away Win: | Paços de Ferreira 0–6 Sporting CP (27 October 2001) |
| Highest Scoring: | 5–3 (2 times) 6-2 (1 time) |
| Matches: | 306 |
| Total Goals: | 818 |
| Prevseason: | 2000–01 |
| Nextseason: | 2002–03 |
The 2001–02 Primeira Liga was the 68th edition of top flight of Portuguese football. It started on 11 August 2001 with a match between Varzim and Benfica, and ended on 6 May 2002. The league was contested by 18 clubs with Boavista as the defending champions.
Sporting CP won the league and qualified for the 2002–03 UEFA Champions League third qualifying round, along with Boavista, who qualified for the second round. Porto and Leixões from the third division qualified for the 2002–03 UEFA Cup; in opposite, Salgueiros, Farense and Alverca were relegated to the Segunda Liga. Mário Jardel was the top scorer with 42 goals. Until 2021, this remained the last season where Sporting CP won the title and where neither Porto nor Benfica won before Sporting CP won the 2020–21 season ending their 19-year drought and 19-year reign of Porto and Benfica.
Campomaiorense, Desportivo das Aves and Estrela da Amadora, were consigned to the Segunda Liga following their final classification in 2000–01 season.
The other three teams were replaced by Santa Clara, Varzim and Vitória de Setúbal from the Segunda Liga.
| Team | Outgoing manager | Date of vacancy | Position in table | Incoming manager | Date of appointment | |
|---|---|---|---|---|---|---|
| Santa Clara | Carlos Manuel | 30 September 2001 | 15th | 1 October 2001 | ||
| Salgueiros | Vítor Manuel | 5 November 2001 | 16th | Carlos Manuel | 6 November 2001 | |
| Farense |  Alberto Pazos | 25 November 2001 | 13th | Jorge Castelo | 26 November 2001 | |
| Varzim | Rogério Gonçalves | 25 November 2001 | 18th | José Alberto Costa | 26 November 2001 | |
| Benfica | Toni | 23 December 2001 | 4th | Jesualdo Ferreira | 28 December 2001 | |
| Alverca | Carlos Pereira | 8 January 2002 | 16th | Vítor Manuel | 9 January 2002 | |
| União de Leiria | José Mourinho | 20 January 2002 | 4th | Mário Reis | 21 January 2002 | |
| Porto | Octávio Machado | 20 January 2002 | 5th | José Mourinho | 21 January 2002 | |
| Vitória de Setúbal | Jorge Jesus | 20 January 2002 | 17th | Luís Campos | 21 January 2002 | |
| Farense | Jorge Castelo | 23 February 2002 | 16th | Paco Fortes | 24 February 2002 | |
| União de Leiria | Mário Reis | 24 February 2002 | 4th | Vítor Pontes | 25 February 2002 |
| Rank | Player | Club | Goals[2] |
|---|---|---|---|
| 1 |  Mário Jardel | Sporting CP | 42 |
| 2 | Derlei | União de Leiria | 21 |
| 3 |  Fary Faye | Beira-Mar | 18 |
| 4 | Hugo Henrique | Vitória de Setúbal | 16 |
| 5 | Gaúcho | Marítimo | 15 |
| Barata | Braga | 15 | |
| 7 | Leonardo | Paços de Ferreira | 14 |
| 8 | Deco | Porto | 13 |
| Mantorras | Benfica | 13 | |
| 10 | Benni McCarthy | Porto | 12 |
| João Pedro | Salgueiros | 12 |
