| Mattin | | - | Basque | |
| Mattithiah | | - | Biblical | |
| Mattithyahu | | - | Biblical Hebrew | |
| Mattityahu | | - | Hebrew, Biblical Hebrew | |
| Matty (2) | | - | Medieval English | |
| Matvei | | maht-VYAY | Russian | |
| Matvey | | maht-VYAY | Russian | |
| Matxin | | - | Basque | |
| Maui | | - | Hawaiian, Polynesian Mythology | |
| Maura (1) | | MOW-rah (Italian, Spanish) | Italian, Spanish, Late Roman | |
| Maurene | | maw-REEN, MAWR-een | English (Rare) | |
| Mauricio | | mow-REE-thyo (Spanish), mow-REE-syo (Latin American Spanish) | Spanish | |
| Mauritius | | - | Late Roman | |
| Maurizio | | mow-REE-tsyo | Italian | |
| Mauro | | MOW-ro (Italian) | Italian, Portuguese (Brazilian) | |