| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 181 | Cynbal | Welsh | Warrior chief. | M | |
| 182 | Cynbel | Welsh | Warrior chief. | M | |
| 183 | Cynddelw | Welsh | Chief statue. | M | |
| 184 | Cyndeyrn | Welsh | Head chief. | M | |
| 185 | Cystenian | Welsh | Steady; stable. | M | |
| 186 | Cystennin | Welsh | Constant. | M | |
| 187 | Dafydd | Welsh | A Welsh form of the Hebrew name David, meaning beloved or friend. | M | |
| 188 | Dai | Welsh | Shines. A Welsh diminutive of David, meaning beloved or friend.. | M | |
| 189 | Dal | Welsh | Diminutive of David: Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales. | M | |
| 190 | Dalldav | Welsh | Legendary son of Cunyn Cov. | M | |
| 191 | Daned | Welsh | Legendary son of Oth. | M | |
| 192 | Daniel | Welsh | Attractive. A translation of the Welsh name Deiniol. | M | |
| 193 | Daryn | Welsh | Great. | M | |
| 194 | Dave | Welsh | Diminutive of David: Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales. | M | |
| 195 | David | Welsh | Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales. | M | |
| 196 | Davies | Welsh | Surname. Variant of David 'beloved.'. | M | |
| 197 | Davy | Welsh | Diminutive of David: Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales. | M | |
| 198 | Davyn | Welsh | Variant of David 'beloved.'. | M | |
| 199 | Delwin | Welsh | Godly friend. | M | |
| 200 | Delwyn | Welsh | Godly friend. | M | |