| Wigberht | | - | Anglo-Saxon, Ancient Germanic | |
| Wigbrand | | - | Ancient Germanic | |
| Wigburg | | - | Ancient Germanic | |
| Wigmar | | - | Ancient Germanic | |
| Wilhelm | | VIL-helm (German), VEEL-khelm (Polish) | German, Polish, Ancient Germanic | |
| Willabert | | - | Ancient Germanic | |
| Willahelm | | - | Ancient Germanic | |
| Willamar | | - | Ancient Germanic | |
| Willifrid | | - | Ancient Germanic | |
| Willihard | | - | Ancient Germanic | |
| Winifrid | | - | Ancient Germanic | |
| Wolf | | WUWLF (English) | German, Jewish, English (Rare), Ancient Germanic | |
| Wolfgang | | VAWLF-gahng (German), WUWLF-gang (English) | German, Ancient Germanic | |
| Xanthe | | - | Greek Mythology, Ancient Greek | |
| Xanthippe | | ksahn-teep-pe (Ancient Greek), zan-TIP-ee (English) | Ancient Greek | |