| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
|---|
| Lucas Gabriel | Lucas Gabriel | Portuguese | Portuguese | | |
| Lucca | Luke | Old Greek | Portuguese | from Lucania | #468 |
| Lúcia | Lucius/Lucia | Latin | Portuguese | the bright; born at daybreak | |
| Luciane | Lucius/Lucia | Latin | Portuguese | the bright; born at daybreak | |
| Lucinda | Lucius/Lucia | Latin | Portuguese, English | the bright; born at daybreak | |
| Luena | Luena | Unknown | Portuguese | | |
| Luís | Ludwig/Louise | Old High German | Portuguese | Words: loud, famous / fight, battle, war | |
| Luísa | Ludwig/Louise | Old High German | Portuguese | Words: loud, famous / fight, battle, war | |
| Luiz | Ludwig/Louise | Old High German | Portuguese | Words: loud, famous / fight, battle, war | |
| Luiz Eduardo | Luiz Eduardo | Portuguese | Portuguese | | |
| Luiz Felipe | Luiz Felipe | Portuguese | Portuguese | | |
| Luiz Fernando | Luiz Fernando | Portuguese | Portuguese | | |
| Luiz Guilherme | Luiz Guilherme | Portuguese | Portuguese | | |
| Luiz Gustavo | Luiz Gustavo | Portuguese | Portuguese | | |
| Luiz Henrique | Luiz Henrique | Portuguese | Portuguese | | |
| Luiz Miguel | Luiz Miguel | Portuguese | Portuguese | | |
| Luiz Otávio | Luiz Otávio | Portuguese | Portuguese | | |
| Luiza | Ludwig/Louise | Old High German | Portuguese | Words: loud, famous / fight, battle, war | |
| Macario | Macario | Old Greek | Portuguese, Spanish, Italian | | |
| Madalena | Magdalena | Hebrew | Portuguese | of Magdala | |
| Mafalda | Mafalda | Provençal | Portuguese, Italian | | |
| Magdalena | Magdalena | Hebrew | German, Spanish, Portuguese, Scandinavian, Dutch, Polish, Czech | of Magdala | #951 |
| Maiara | Maiara | Tupi | Portuguese | maybe lady | |
| Maicon | Michael/Michaela | Hebrew | Portuguese | Who is like God? | |
| Maitê | Maite | Spanish | Portuguese | | |
| Malu | Malu | Unknown | Portuguese | | |
| Manel | Manuel/Manuela | Hebrew | Portuguese | God is with us | |
| Manoel | Manuel/Manuela | Hebrew | Portuguese | God is with us | |
| Manoela | Manuel/Manuela | Hebrew | Portuguese | God is with us | |
| Manuel | Manuel/Manuela | Hebrew | German, Portuguese, Spanish | God is with us | #320 |
| Marcelina | Marcellinus/Marcellina | Latin | Portuguese, Spanish, Italian, Polish | | |
| Marcelo | Marcel | Latin | Portuguese, Spanish | Words: dedicated to Mars | #582 |
| Marcia | Marcio/Marcia | Latin | Spanish, Portuguese, English, Italian | Words: dedicated to Mars | |
| Márcia | Marcio/Marcia | Latin | Portuguese | Words: dedicated to Mars | |
| Marcio | Marcio/Marcia | Latin | Portuguese, Spanish, Italian | Words: dedicated to Mars | |
| Márcio | Marcio/Marcia | Latin | Portuguese | Words: dedicated to Mars | |
| Marco | Mark/Marcella | Latin | Portuguese, Spanish, Italian | dedicated to Mars (the Roman god of war) | #398 |
| Marco Antônio | Marco Antônio | Portuguese | Portuguese | | |
| Marcos | Mark/Marcella | Latin | Portuguese, Spanish | dedicated to Mars (the Roman god of war) | #491 |
| Marcos Vinicius | Marcos Vinicius | Portuguese | Portuguese | | |
| Margarida | Margarete | Old Greek | Portuguese | the pearl | |
| Maria | Mary | Hebrew | German, Scandinavian, Dutch, English, Italian, Portuguese, Greek, Polish | maybe bitterness | #106 |
| Maria Alice | Maria Alice | Portuguese | Portuguese | | |
| Maria Antônia | Maria Antônia | Portuguese | Portuguese | | |
| Maria Cecília | Maria Cecília | Portuguese | Portuguese | | |
| Maria Clara | Maria Clara | Portuguese | Portuguese | | |
| Maria Eduarda | Maria Eduarda | Portuguese | Portuguese | | |
| Maria Elisa | Maria Elisa | Portuguese | Portuguese | | |
| Maria Eloá | Maria Eloá | Portuguese | Portuguese | | |
| Maria Fernanda | María Fernanda | Spanish | Portuguese | | |
| Maria Flor | Maria Flor | Portuguese | Portuguese | | |
| Maria Helena | Maria Helena | Portuguese | Portuguese | | |
| Maria Heloísa | Maria Heloísa | Portuguese | Portuguese | | |
| Maria Isis | Maria Isis | Portuguese | Portuguese | | |
| Maria Júlia | Maria Júlia | Portuguese | Portuguese | | |
| Maria Laura | Maria Laura | Portuguese | Portuguese | | |
| Maria Liz | Maria Liz | Portuguese | Portuguese | | |
| Maria Luísa | Maria Luísa | (la) | Portuguese | | |
| Maria Luiza | Maria Luiza | Portuguese | Portuguese | | |
| Maria Sophia | Maria Sophia | Portuguese | Portuguese | | |
| Maria Valentina | Maria Valentina | Portuguese | Portuguese | | |
| Maria Vitória | Maria Vitória | Portuguese | Portuguese | | |
| Mariana | Mariano/Mariana | Latin | Portuguese, Spanish | | |
| Mariane | Mariano/Mariana | Latin | Portuguese | | |
| Mariano | Mariano/Mariana | Latin | Portuguese, Spanish, Italian | | |
| Marina | Marin/Marina | Latin | German, Portuguese, Spanish, Italian, Romanian, Russian, Greek | of the sea | #718 |
| Mario | Marius | Latin | German, Portuguese, Spanish, Italian | Words: male | #348 |
| Mário | Marius | Latin | Portuguese | Words: male | |
| Marte | Mars | Latin | Portuguese, Spanish, Italian | | |
| Martim | Martin/Martina | Latin | Portuguese | Words: Mars | |
| Martinho | Martin/Martina | Latin | Portuguese | Words: Mars | |
| Mateus | Matthias/Mattea | Hebrew | Portuguese | gift of Yahweh | |
| Matheus | Matthias/Mattea | Hebrew | Portuguese | gift of Yahweh | |
| Matheus Henrique | Matheus Henrique | Portuguese | Portuguese | | |
| Mauricio | Maurice/Maura | Latin | Portuguese, Spanish | the one from Mauritania, the Moor | #707 |
| Maximino | Maximino | Latin | Portuguese, Spanish | Words: very great, greatest | |
| Mayara | Maiara | Tupi | Portuguese | maybe lady | |
| Maysa | Maysa | Unknown | Portuguese | | |
| Mercúrio | Merkur | Latin | Portuguese | Words: merchandise | |
| Micael | Michael/Michaela | Hebrew | Portuguese | Who is like God? | |
| Miguel | Michael/Michaela | Hebrew | Portuguese, Spanish | Who is like God? | #195 |
| Miguel Henrique | Miguel Henrique | Portuguese | Portuguese | | |
| Monica | Monica | Latin | Portuguese, English, Italian | Words: hermit, monk / advise, warn | #693 |
| Murilo | Murilo | Unknown | Portuguese | | |
| Naara | Naarah | Hebrew | Portuguese, Spanish, Italian | girl, maid | |
| Nádia | Nadezhda | Russian | Portuguese | hope | |
| Nair | Nair | Unknown | Portuguese | | |
| Narcisa | Narcisse/Narcissa | Old Greek | Portuguese, Romanian | Words: sleep, numbness / narcissus | |
| Narciso | Narcisse/Narcissa | Old Greek | Portuguese, Spanish, Italian | Words: sleep, numbness / narcissus | |
| Nathalia | Noel/Natalie | Latin | Portuguese | born on Christmas | |
| Nathália | Noel/Natalie | Latin | Portuguese | born on Christmas | |
| Nayara | Naiara | Basque | Portuguese | maybe the wanderer | |
| Neptuno | Neptun | Latin | Portuguese, Spanish | Words: wet, water | |
| Nerea | Nerea | Basque | Portuguese, Spanish | | |
| Nicodemo | Nikodemus | Old Greek | Portuguese, Spanish, Italian | victory of the people | |
| Nilda | Brunhilde | Old High German | Portuguese, Spanish | Words: fight | |
| Nuno | Nuno | Latin | Portuguese | maybe the ninth | |
| Núria | Nuria | Catalan | Portuguese | | |
| Olívia | Olivia | Latin | Portuguese | the olive tree, the olive | |
| Otávio | Octavius/Octavia | Latin | Portuguese | the eighth, born in the eighth month | |
