| Conflict: | Hot Summer of 1975 |
| Partof: | PREC |
| Date: | June – August 1975 |
| Place: | Portugal, especially in the North |
| Width: | 420px |
| Casus: | PS sucess in the 1975 Portuguese Constituent Assembly election Coup of 11 March 1975 |
| Result: | Prime Minister Vasco Gonçalves is dismissed Coup of 25 November 1975:
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| Combatant1: |  Provisional Governments of the Third Portuguese Republic Supported by: PCP |
| Combatant2: | ELP MDLP Movimento Maria da Fonte CODECO Rightist political parties: CDS PPD |
| Combatant3: | Group of Nine |
| Combatant4: | PS |
| Commander1: | Francisco da Costa Gomes Vasco Gonçalves Otelo Saraiva de Carvalho Álvaro Cunhal |
| Commander2: | António de Spínola Guilherme Almor de Alpoim Calvão Ramiro Moreira António Pires Veloso Jaime Neves Paradela de Abreu Eduardo Melo Peixoto |
| Commander3: | Ernesto Melo Antunes Vasco Lourenço Jaime Neves António Ramalho Eanes |
| Commander4: | Mário Soares |
The Hot Summer of 1975 (Portuguese: Verão Quente de 1975) was a tumultuous period in Portuguese history characterized by political, social and military instability. At the center of the conflict was the rift between rightist and leftist groups, as well as the rift among leftist groups themselves.[1]
Although tensions can be said to have started after António de Spínola's resignation in the 30th of September of 1974, and ultimately culminated in the failed coup of 25 November 1975, most of the violence and tensions that gave the period its name lasted throughout the eponymous summer of 1975. Violence, including some of the most brutal continued into the next year and into the 70s and 80s.