Starting with letter M
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 81 | MacLeod | Scottish | Son of the ugly man. | M | |
| 82 | MacMaureadhaigh | Irish | Son of Murray. | M | |
| 83 | MacMillan | Scottish | Son of the ba!d man. | M | |
| 84 | MacNab | Scottish | Son of the Abbot. | M | |
| 85 | MacNachtan | Scottish | Son of the pure one. | M | |
| 86 | MacNeill | Scottish | Son of the champion. | M | |
| 87 | MacNicol | Scottish | Son of the conquering people. | M | |
| 88 | MacPherson | Scottish | Son of the parson. | M | |
| 89 | MacQuaid | Irish | Son of Quaid. | M | |
| 90 | MacQuarrie | Scottish | Son of the proud. | M | |
| 91 | MacQueen | Scottish | Son of the good man. | M | |
| 92 | MacRae | Scottish | Son of grace. | M | |
| 93 | Madai | Biblical | A measure, judging, a garment. | M | |
| 94 | Madawc | Welsh | Beneficent. | M | |
| 95 | Madawg | Welsh | Legendary son of Teithyon. | M | |
| 96 | Madden | Irish | Smalldog Milos. | M | |
| 97 | Madelhari | German | War counselor. | M | |
| 98 | Madhava | Indian | God of spring. | M | |
| 99 | Madison | English | Surname derived from Matthew 'gift of God' or from Matilda 'strong fighter.'. | M | |
| 100 | Madison | Teutonic | Son of Maud. | M | |