Search Welsh Baby Names
| # | Name | Origin | Meaning | Gender | Save |
| 651 | Maddog | Welsh | Beneficent. | M |  |
| 652 | Maddox | Welsh | Son of Maddock. | M | |
| 653 | Madoc | Welsh | Fortunate. Beneficent. | M | |
| 654 | Madog | Welsh | Beneficent. | M | |
| 655 | Maegan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 656 | Mael | Welsh | Legendary son of Roycol. | M | |
| 657 | Maelgwyn | Welsh | Prince of the hounds. | M | |
| 658 | Maelwys | Welsh | Legendary son of Baeddan. | M | |
| 659 | Mair | Welsh | Bitter. | F | |
| 660 | Mali | Welsh | Welsh form of Molly: bitter. | F | |
| 661 | Mallolwch | Welsh | Legendary king of Ireland. | M | |
| 662 | Manawydan | Welsh | Legendary son of LIyr. | M | |
| 663 | March | Welsh | Legendary son of Meirchywn. | M | |
| 664 | Maredud | Welsh | Magnificent. | F | |
| 665 | Marged | Welsh | Pearl. | F | |
| 666 | Margred | Welsh | Pearl. | F | |
| 667 | Mari | Welsh | Variant of Mary, meaning bitter. Favored prefix for blended names like Maribel. | F | |
| 668 | Marvin | Welsh | Variant of Mervyn: Form of Merlin: From the sea fortress. | M | |
| 669 | Marvyn | Welsh | Variant of Mervyn: Form of Merlin: From the sea fortress. | M | |
| 670 | Mathias | Welsh | Gift of God. | M | |
| 671 | Mawrth | Welsh | Welsh form of Mars, god of war. | M | |
| 672 | Maygan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 673 | Meagan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 674 | Meaghan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 675 | Medyr | Welsh | Legendary son of Medyredydd. | M | |
| 676 | Meeghan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 677 | Meggan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 678 | Meghan | Welsh | Pearl. | F | |
| 679 | Meilyg | Welsh | Legendary son of Caw. | M | |
| 680 | Meirion | Welsh | Name derived from the old county of Merionethshire. | F | |
| 681 | Meirion | Welsh | Name derived from the old county of Merionethshire. | M | |
| 682 | Menw | Welsh | Legendary son of Teinkaedd. | M | |
| 683 | Mercher | Welsh | Welsh form of Mercury, messenger of the gods. | M | |
| 684 | Mercia | Welsh | From Mercia. | F | |
| 685 | Meredith | Welsh | Magnificent. Great chief. Great lady. This name can be given to children of either gender, but is more common among girls. | F | |
| 686 | Meredith | Welsh | Guardian of the sea. Great chief. This name can be given to children of either gender, but is more common among girls. | M | |
| 687 | Meredydd | Welsh | Magnificent. | F | |
| 688 | Meredydd | Welsh | Guardian of the sea. | M | |
| 689 | Mererid | Welsh | Pearl. | F | |
| 690 | Meridith | Welsh | Guardian of the sea. | M | |
| 691 | Merlin | Welsh | Hawk. From the sea fortress. In Arthurian legend, Merlin Ambrosius was adviser/mentor to King Arthur. | M | |
| 692 | Merlyn | Welsh | Sea fortress. In Arthurian mythology the wizard Merlin was King Arthur's mentor. | M | |
| 693 | Merrick | Welsh | Dark-skinned; A Moor. Form of Maurice. | M | |
| 694 | Merrion | Welsh | Variant of Meirion: Name derived from the old county of Merionethshire. | F | |
| 695 | Merrion | Welsh | Variant of Meirion: Name derived from the old county of Merionethshire. | M | |
| 696 | Merry | Welsh | Diminutive of Meredith: Magnificent. Great chief. Great lady. Used for both genders, but most common among girls. | F | |
| 697 | Merry | Welsh | Diminutive of Meredith: Guardian of the sea. Great chief. This name can be given to children of either gender, but is more common among girls. | M | |
| 698 | Merv | Welsh | Diminutive of Mervyn: Form of Merlin: From the sea fortress. | M | |
| 699 | Mervin | Welsh | Variant of Mervyn: Form of Merlin: From the sea fortress. | M | |
| 700 | Mervyn | Welsh | Form of Merlin: From the sea fortress. | M | |