| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 321 | Martin | Spanish | Warring. | M | |
| 322 | Martinez | Spanish | Warring. | M | |
| 323 | Martino | Spanish | Warring. | M | |
| 324 | Mateo | Spanish | God's gift. | M | |
| 325 | Matias | Spanish | Gift of God. | M | |
| 326 | Matro | Spanish | God's gift. | M | |
| 327 | Maureo | Spanish | Dark-skinned; A Moor. | M | |
| 328 | Mauricio | Spanish | Moorish. | M | |
| 329 | Mauro | Spanish | Moorish. | M | |
| 330 | Miguel | Spanish | Spanish form of Michael 'God like'. | M | |
| 331 | Moises | Spanish | Spanish form of Moses 'from the water'. | M | |
| 332 | Montae | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |
| 333 | Montay | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |
| 334 | Monte | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |
| 335 | Montel | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |
| 336 | Montes | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |
| 337 | Montez | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |
| 338 | Montrel | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |
| 339 | Montrell | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |
| 340 | Montrelle | Spanish | Mountain. Abbreviation of Montague and Montgomery. | M | |