| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 641 | Winifreda | German | Peaceful friend. | F | |
| 642 | Winifrid | German | Peaceful friend. | F | |
| 643 | Winifride | German | Peaceful friend. | F | |
| 644 | Winola | German | Gracious friend. | F | |
| 645 | Yseult | German | Ruler of ice. | F | |
| 646 | Yvette | German | Feminine form of Ivo: Yew. Introduced into Britain during the Norman Conquest. | F | |
| 647 | Yvonne | German | Feminine form of Ivo: Yew. Introduced into Britain during the Norman Conquest. | F | |
| 648 | Zelda | German | Diminutive of Griselda: From the Old German, meaning 'grey battle' or 'Christian battle'. | F | |