The Portuguese Final was held on February 18th at the Teatro Villaret in Lisbon, hosted by Maria José Azevado & Eládio Clímaco. The winning song was chosen by a jury of 12 people.
| 1 | O meu piano | My piano | José Cid | 42 |
2nd |
| 2 | O circo e a cidade | The circus and the town | Gemini | 36 |
3rd |
| 3 | Pela vida fora | Throughout life | Tonicha | 25 |
9th |
| 4 | Porquê, meu amor, porquê | Why, my love, why | José Cid | 31 |
6th |
| 5 | Tudo vale a pena | All worthwhile | Gemini | 23 |
11th |
| 6 | Um dia, uma flor | One day, one flower | Tonicha | 28 |
8th |
| 7 | O largo do corêto | The bandstand square | José Cid | 30 |
7th |
| 8 | Ano novo é vida nova | New year and new life | Gemini | 24 |
10th |
| 9 | Canção da amizade | Song of friendship | Tonicha | 34 |
4th |
| 10 | Aqui fica uma canção | Here stays a song | José Cid | 33 |
5th |
| 11 | Dai-li dai-li dou | Dai-li dai-li dou | Gemini | 46 |
1st |
| 12 | Quem te quer bem, meu bem | Who wants you, my dear | Tonicha | 21 |
12th |
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Gemini previously came 6th in the 1977 Portuguese Final. At the ESC they came 17th. Tonicha represented Portugal in 1971.