This is a list of surnames in which the usage is Irish; and the first letter is D.
Daly IrishAnglicized form of Irish
Ó Dálaigh meaning
"descendant of Dálach".
Dempsey IrishAnglicized form of Irish
Ó Díomasaigh meaning
"descendant of Díomasach", a given name meaning "proud".
Desmond IrishAnglicized form of Irish
Ó Deasmhumhnaigh meaning "descendant of the man from South Munster", originally indicating a person who came from the region of South Munster (Desmond) in Ireland.
Devlin IrishAnglicized form of the Irish
Ó Doibhilin meaning
"descendant of Doibhilin", a given name that may be derived from the Gaelic term
dobhail meaning "unlucky".
Doherty IrishFrom the Irish
Ó Dochartaigh meaning
"descendant of Dochartach". The byname
Dochartach means "obstructive".
Donne Scottish, IrishFrom Gaelic
donn meaning
"brown", a nickname for a person with brown hair.
Donnelly IrishFrom Irish
Ó Donnghaile meaning
"descendant of Donnghal". The given name
Donnghal means "brown valour", from
donn "brown" and
gal "valour". This surname is associated with the descendants of Niall of the Nine Hostages.
Doran IrishFrom Irish
Ó Deoradháin meaning
"descendant of Deoradhán", where
Deoradhán is a given name meaning "exile, wanderer".
Doyle IrishFrom the Irish
Ó Dubhghaill, which means
"descendant of Dubhghall". A famous bearer was Arthur Conan Doyle (1859-1930), the author of the Sherlock Holmes mystery stories.
Driscoll IrishFrom Irish
Ó hEidirsceóil meaning
"descendant of the messenger".
Duffy 1 IrishDerived from Irish
Ó Dubhthaigh meaning
"descendant of Dubthach". Their original homeland was Monaghan where the surname is still the most common; they are also from Donegal and Roscommon.
Dunn English, Scottish, IrishDerived from Old English
dunn "dark" or Gaelic
donn "brown", referring to hair colour or complexion.
Durnin IrishFrom Irish
Ó Doirnáin meaning
"descendant of Doirnín", a given name meaning "little fist".