| Crayton | Border dweller. |
| Crom | Derived from the word crooked. |
| Cromwell | From the crooked well |
| Cruim | Derived from a bent posture. |
| Cuddle | This diminutive of Cuthbert may have given rise to the Scottish dialect word 'cuddy', meaning donkey. |
| Cuddy | This diminutive of Cuthbert may have given rise to the Scottish dialect word 'cuddy', meaning donkey. |
| Culloden | From the nook of the marsh |
| Cullodena | From the broken mossy ground |
| Cullodina | From the broken mossy ground |
| Culzean | Variant of Colleen. Girl. |
| Cumhaige | Dog/hound of the plain. |
| Cumin | Named after the aromatic spice plant. |
| Cumina | A feminine form of the spice name. |
| Cumming | Derived from a Scottish clan name. |
| Cunningham | From Cunningham |
| Daileass | From the waterfall |
| Daimh | A name meaning a gentle ox. |
| Dallas | From the dales: the valley meadows. Name of a Texas city. |
| Dallis | From the dales: the valley meadows. |
| Dalyell | From the little field |
| Dalziel | From the little field |
| Damh | A name meaning a stag or deer spirit. |
| Darach | Derived from the sturdy oak tree. |
| Daracha | One who comes from the oak tree. |
| Dhoire | A person of great patience |
| Doggie | Diminutive of Douglas: From the Gaelic 'dubhglas' meaning dark water, dark stream, or from the dark river. |
| Doire | Meaning an oak wood or grove. |
| Dolaidh | World ruler; rules the world. |
| Domhnull | Ruler of the entire world |
| Donal | Variant of Donald great chief. |
| Donaldo | Variant of Donald: Great cheif, world mighty. From the Gaelic Domhnall. The name Donald has been borne by a number of early Scottish kings. Famous Bearers: Billionaire Donald Trump; actor Donald Sutherland. |
| Donalt | Variant of Donald: Great cheif, world mighty. From the Gaelic Domhnall. The name Donald has been borne by a number of early Scottish kings. Famous Bearers: Billionaire Donald Trump; actor Donald Sutherland. |
| Donel | A ruler of the worlds people. |
| Donnachadh | A brownhaired warrior chief. |
| Donnchadh | A brownhaired noble leader. |
| Donnel | Variant of Donald great chief. |
| Donnell | Strong and powerful ruler, derived from the Gaelic 'dun' meaning hill or fortress and 'ell' meaning noble. |
| Dougald | Variant of Dougal: Dark-skinned stranger. |
| Dougall | Variant of Dougal: Dark-skinned stranger. |
| Doughall | A Scottish name meaning dark stranger. |