Diarmid \di(ar)-mid\ as a boy's name is of Irish and Gaelic origin, and the meaning of Diarmid is "free man". The anglicized version is Dermot.

Diarmid has 3 variant forms: Diarmaid, Diarmait and Diarmi.

For more information, see also the related name Jeremiah.

A baby name that sounds like Diarmid is Dermott.