Portugal: Festival RTP da Canção 1980
Semi-final 1
Festival RTP da Canção 1980 – Semi-final 1
| Date | 1 February 1980 |
| Location | Teatro Villaret |
| City | Lisbon |
| Host | Eládio Clímaco |
| Voting | Five-member jury |
Semi-final 2
Festival RTP da Canção 1980 – Semi-final 2
| Date | 8 February 1980 |
| Location | Teatro Villaret |
| City | Lisbon |
| Host | Eládio Clímaco |
| Voting | Five-member jury |
Semi-final 3
Festival RTP da Canção 1980 – Semi-final 3
| Date | 15 February 1980 |
| Location | Teatro Villaret |
| City | Lisbon |
| Host | Eládio Clímaco |
| Voting | Five-member jury |
Final
Festival RTP da Canção 1980 – Final
| Date | 7 March 1980 |
| Location | Teatro São Luiz |
| City | Lisbon |
| Hosts | Ana Zanatti Eládio Clímaco |
| Voting | 22 regional juries |
