Former Owner
- Luigi Serra di Cassano1
- Luis Escobet1
- Luis Fernández de Córdoba y Aragón1
- Luis Ordoñez1
- Luther Albertus Brewer1
- Lutheran Theological Seminary at Philadelphia1
- Lyon Cathedral1
- Léon Gruel1
- Lālajī Śarmaṇ1
- M. De La Tour1
- M. Haimmiller1
- M. Louise Stowell1
- Madeleine Cosman1
- Madyan Qusuni1
- Madyājñika Devakṛṣṇa1
- Maffeo Pinelli1
- Mahdī ibn Muṣṭafá al-Ḥusaynī1
- Maheśa1
- Maksymilian Mielzynski1
- Malachia Ormanian1