Former Owner
- Margaret Anna Hazard1
- Martin Schøyen1
- Marvin-L. Colker1
- Mary Bloch1
- Mayfair Rare Books and Manuscripts1
- Maḥmūd al-Ustādār, d. 1396 or 71
- McCormick Theological Seminary1
- Michael Greenberg1
- Michael Tomkinson1
- Monastery of Saint Peter (Erfurt, Germany)1
- Morton Davis Mitchell1
- Moses Shapira1
- Mrs. Turnbull1
- Muḥammad ʻAbduh1
- Nancy McGrath1
- Nathan Comfort Starr1
- Naʻīm1
- Nell Wheeler1
- Nicholas Chevalier1
- Nicholas Herry1