| Author | Titles | | 1.
| Rosa, Alda, 1936- | 39 | | 2.
| Rosa, Alexandre | 1 | | 3.
| Rosa, Alexandre Feu | 1 | | 4.
| Rosa, Álvaro Barros | 1 | | 5.
| Rosa, Amorim, 1900-1976 | 3 | | 6.
| Rosa, Anabela Henriques | 2 | | 7.
| Rosa, Antónia, 1966- | 1 | | 8.
| Rosa, Antonio de la | 1 | | 9.
| Rosa, António Francisco, 1770-1829 | 1 | | 10.
| Rosa, António Machuco | 3 |
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