- John Manuel, Prince of Portugal, 1537-15541
- John V, King of Portugal, 1689-17501
- Juana, of Austria, Princess of Portugal, 1535-15731
- Lafões, Pedro Henrique de Bragança, Duque de, 1718-17611
- Land tenure1
- Law1
- Leases1
- Lopez Bulhão, Antonio, active 1510-15151
- Lyric poetry1
- Manuel I, King of Portugal, 1469-15211
- Manuscript maps1
- Manuscripts, Latin (Medieval and modern)1
- Manuscripts, Medieval1
- Manuscripts, Spanish1
- Maria Anna Josefa, Queen, consort of John V, King of Portugal, 1683-17541
- Meneses, Pedro de, Conde de Vila Real, -14371
- Mikveh1
- Missions1
- Monasteries1
- Monasticism and religious orders1