Clay 
(klā), Cassius Marcellus 1810-1903.
(klā), Cassius Marcellus 1810-1903. American abolitionist and public official who was minister to Russia (1861-1862 and 1863-1869).
- Max Ferdinand
- Maxfield Frederick
- Max Forrester
- Max Goldmann.
- maxi
- maxi dress
- maxidress
- maxilla
- maxillary
- maxilliped
- maxillofacial
- Maxim
- maxim
- maxima
- maximal
- maximalist
- maximally
- Maxim gun
- Maximilian
- Maximilian I
- Maximilian II
- Maximilian sunflower
- Maximilien de Béthune.
- Maximilien François Marie Isidore de
- maximization