| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 381 | Marcellus | Shakespearean | 'Hamlet, Prince of Denmark' An officer. | M | |
| 382 | March | Shakespearean | 'King Henry IV, Part 1' Edmund Mortimer, Earl of March. 'King Henry the Sixth, Part III' Edward, Earl of March and son to Richard Plantagenet, afterwards King Edward IV. | M | |
| 383 | Marcius | Shakespearean | 'The Tragedy of Coriolanus.' Caius Marcius Coriolanus, and also Young Marcius, son to Coriolanus. | M | |
| 384 | Marcus | Shakespearean | The Tragedy of Julius Caesar. 'The Tragedy of Titus Andronicus' Marcus Andronicus, Tribune of the People, and brother to Titus. | M | |
| 385 | Mardian | Shakespearean | Antony and Cleopatra'. Attendant on Cleopatra. | M | |
| 386 | Margarelon | Shakespearean | 'The History of Troilus and Cressida' A bastard son of King Priam. | M | |
| 387 | Margaret | Shakespearean | 'Henry VI, Part 1' Reignier's daughter, afterwards married to Henry VI. 'Henry VI, Part III' Queen Margaret. 'Much Ado About Nothing' Gentlewoman attending on Hero. 'King Richard III' King Henry VI's widow. 'King Richard III' Clarence's daughter. | F | |
| 388 | Margaret F | Shakespearean | 'Henry VI, Part 2' Queen to King Henry VI. | F | |
| 389 | Margaret F | Shakespearean | 'Henry VI, Part 2' Queen to King Henry VI. | M | |
| 390 | Margery | Shakespearean | 'Henry VI, Part 2' Margery Jourdain, a witch. | F | |
| 391 | Maria | Shakespearean | 'Love's Labours Lost' A lady attending on the Princess of France. 'Twelfth Night', also called 'What You Will' Olivia's waiting woman. | F | |
| 392 | Mariana | Shakespearean | All's Well That Ends Well.' Neighbour and friend to the Widow of Florence 'Measure for Measure' Betrothed to Angelo. | F | |
| 393 | Marina | Shakespearean | 'Pericles, Prince of Tyre' Daughter to Pericles and Thaisa. | F | |
| 394 | Mark | Shakespearean | Antony and Cleopatra' and 'The Tragedy of Julius Caesar.' Mark Antony, roman triumvir and Cleopatra's lover. | M | |
| 395 | Martext | Shakespearean | As You Like It' Son of Sir Rowland de Boys. As You Like It' Sir Oliver Martext, a vicar. | M | |
| 396 | Martius | Shakespearean | 'The Tragedy of Titus Andronicus' Son to Titus Andronicus. | M | |
| 397 | Marullus | Shakespearean | 'The Tragedy of Julius Caesar' A tribune. | M | |
| 398 | Matthew | Shakespearean | 'Henry VI, Part 2' Matthew Goffe. | M | |
| 399 | Melun | Shakespearean | 'King JOHN' A French lord. | M | |
| 400 | Menas | Shakespearean | Antony and Cleopatra'. Friend to Pompey. | M | |