| Author | Titles | | 1.
| Leal, Augusto Soares de Azevedo Barbosa de Pinho, 1816-1884 | 3 | | 2.
| Leal, Blanca | 1 | | 3.
| Leal, Brigitte, 1955- | 11 | | 4.
| Leal, Carlos | 2 | | 5.
| Leal, Carlos de Sousa | 1 | | 6.
| Leal, Carlos Eduardo de Castro | 1 | | 7.
| Leal, César, 1923-2013 | 2 | | 8.
| Leal, Cristina | 1 | | 9.
| Leal, Cristina d'Eça | 1 | | 10.
| Leal, Cunha, 1888-1970 | 36 |
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