| Name | Meaning | Gender | Origin |
|---|
| Max | Little Maximus | Male | Latin |
| Mayer | Clever | Male | Hebrew |
| Medwin | Powerful friend | Male | German |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Moritz | Moor | Unisex | Latin |
| Mozart | | Unisex | Hebrew |
| Norbert | Bright north, famous north | Male | Germanic |
| Obelix | Pillar of strength | Male | English |
| Oberon | Noble bear | Unisex | German |
| Odell | Woad hill | Male | English |
| Osbaldo | Uncertain, possibly divine power | Male | German |
| Ossi | | Unisex | Hebrew |
| Osvaldo | Uncertain, possibly divine power | Male | German |
| Oswald | Uncertain, possibly divine power | Male | German |
| Oswaldo | Uncertain, possibly divine power | Male | German |
| Othello | Wealth | Male | German |
| Otis | One who hears well | Male | Greek |
| Otto | Wealth | Male | German |
| Penrod | Famous Commander | Male | English |
| Porsche | Pig | Unisex | Latin |
| Prinz | | Unisex | Hebrew |
| Rainer | Wise army | Male | Germanic |
| Raymond | Advice | Male | Germanic |
| Raynard | Strong Counselor. | Male | English |
| Renate | Reborn | Unisex | Latin |
| Rex | King | Male | Latin |
| Richard | Strong power | Male | French |
| Ritter | Knight | Male | German |
| Rocky | Battle cry | Male | Germanic |