1989–90 Primeira Divisão
The 1989–90 Primeira Divisão was the 56th edition of top flight of Portuguese football. It started on 20 August 1989 with a match between Chaves and Penafiel, and ended on 20 May 1990. The league was contested by 18 clubs with Benfica as the defending champions.
Porto qualified for the 1990–91 European Cup first round, Estrela da Amadora qualified for the 1990–91 European Cup Winners' Cup first round, and Benfica, Sporting CP and Vitória de Guimarães qualified for the 1990–91 UEFA Cup first round; in opposite, Portimonense and Feirense were relegated to the Liga de Honra. Magnusson was the top scorer with 33 goals.
Promotion and relegation
Teams relegated to [Liga de Honra]
- Espinho
- Fafe
- Farense
- Leixões
- Académico de Viseu
Teams promoted from Liga de Honra
- União da Madeira
- Feirense
- Tirsense
Teams
Stadia and locations
| Team | Head Coach | City | Stadium | 1988–89 finish |
| Beira-Mar |  Jean Thissen | Aveiro | Estádio Mário Duarte | 15th |
| Belenenses |  Hristo Mladenov | Lisbon | Estádio do Restelo | 7th |
| Benfica |  Sven-Göran Eriksson | Lisbon | Estádio da Luz | 1st |
| Boavista |  Raul Águas | Porto | Estádio do Bessa | 3rd |
| Braga | Vítor Manuel | Braga | Estádio Primeiro de Maio | 6th |
| Chaves | José Romão | Chaves | Estádio Municipal de Chaves | 13th |
| Estrela da Amadora | João Alves | Amadora | Estádio José Gomes | 8th |
| Feirense | Henrique Nunes | Santa Maria da Feira | Estádio Marcolino de Castro | 2nd in Segunda Divisão |
| Marítimo | Quinito | Funchal | Estádio dos Barreiros | 12th |
| Nacional | Fernando Pires | Funchal | Estádio dos Barreiros | 10th |
| Penafiel | Carlos Alhinho | Penafiel | Estádio Municipal 25 de Abril | 14th |
| Portimonense | José Torres | Portimão | Estádio Municipal de Portimão | 11th |
| Porto | Artur Jorge | Porto | Estádio das Antas | 2nd |
| Sporting | Manuel José | Lisbon | Estádio José Alvalade | 4th |
| Tirsense | Prof. Neca | Santo Tirso | Estádio Abel Alves de Figueiredo | 3rd in Segunda Divisão |
| União da Madeira | Rui Mâncio | Funchal | Estádio dos Barreiros | 1st in Segunda Divisão |
| Vitória de Guimarães |  Paulo Autuori | Guimarães | Estádio D. Afonso Henriques | 9th |
| Vitória de Setúbal |  Manuel Fernandes | Setúbal | Estádio do Bonfim | 5th |