| MACSEN m Welsh |
| MAKS m Russian |
| MAKSIM m Russian, Macedonian |
| MAKSIMILIAN m Russian |
| MAKSYM m Polish |
| MAKSYMILIAN m Polish |
| MASSIMILIANO m Italian |
| MASSIMO m Italian |
| MAX m German, English, Swedish, Norwegian, Danish, Dutch |
| MAXEN m Welsh |
| MAXENE f English (Rare) |
| MAXIM m Russian |
| MÁXIMA f Spanish |
| MAXIMA f Ancient Roman |
| MAXIME m French |
| MAXIMIANO m Spanish, Portuguese |
| MAXIMIANUS m Ancient Roman |
| MAXIMILIAAN m Dutch |
| MAXIMILIÁN m Slovak |
| MAXIMILIAN m German, English, Swedish, Norwegian, Danish |
| MAXIMILIANA f Ancient Roman |
| MAXIMILIANE f German |
| MAXIMILIANO m Spanish, Portuguese |
| MAXIMILIANUS m Ancient Roman |
| MAXIMILIEN m French |
| MAXIMILIENNE f French |
| MAXIMILLIAN m English |
| MAXIMINO m Spanish, Portuguese |
| MAXIMINUS m Ancient Roman |
| MÁXIMO m Spanish |
| MAXIMUS m Ancient Roman |
| MAXINE f English |
| MAXMILIÁN m Czech |
| MIKSA m Hungarian |
