| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 201 | Doran | Celtic | Stranger. | M | |
| 202 | Dorran | Celtic | Stranger. | M | |
| 203 | Dosne | Celtic | From the sand hill. | M | |
| 204 | Dougal | Celtic | Dark stranger. | M | |
| 205 | Doughal | Celtic | Dark stranger. | M | |
| 206 | Doughlas | Celtic | Dwells by the dark stream. | M | |
| 207 | Douglas | Celtic | Dwells by the dark stream. | M | |
| 208 | Doy | Celtic | Dark stranger. | M | |
| 209 | Doyle | Celtic | Dark stranger. | M | |
| 210 | Drem | Celtic | Mythical son of Dremidydd. | M | |
| 211 | Driscol | Celtic | Interpreter. | M | |
| 212 | Driscoll | Celtic | Interpreter. | M | |
| 213 | Driskell | Celtic | Interpreter. | M | |
| 214 | Druce | Celtic | Wise. | M | |
| 215 | Drudwyn | Celtic | Mythical Mabon's dog. | M | |
| 216 | Drummond | Celtic | Lives on the hill top. | M | |
| 217 | Duane | Celtic | Song. | M | |
| 218 | Dubv | Celtic | Dark faced. | M | |
| 219 | Duer | Celtic | Hero. | M | |
| 220 | Duff | Celtic | Dark-skinned. | M | |