| Wolfram | Man | German Names |
| Wood | Man | American Names |
| Woodard | Unisex | English Names |
| Woodrow | Man | English Names |
| Woods | Man | English Names |
| Woodward | Man | English Names |
| Woody | Man | American Names |
| Worth | Man | American Names |
| Wowashi | Unisex | Native American - Sioux Names |
| Wozhupiwi | Unisex | Native American - Sioux Names |
| Wray | Man | Scandinavian Names |
| Wren | Woman | English Names |
| Wrenley | Woman | American Names |
| Wright | Man | English Names |
| Wrigley | Unisex | English Names |
| Wulfric | Man | English Names |
| Wulfstan | Man | English Names |
| Wulviva | Woman | English Names |
| Wuyi | Man | Native American - Miwok Names |
| Wyanet | Woman | Native American Names |