IrishLast Names [Surnames] starting with O

Irish last names starting with O

Irish last names in alphabetical order:
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Name	Origin	Meaning
Omullany	Irish
Omullarkey	Irish
Omulleena	Irish
Omullery	Irish
Omulligan	Irish
Omulmohery	Irish
Omulvany	Irish
Omulvey	Irish
Omulvihil	Irish
Omurnaghan	Irish
Omurnane	Irish
Onaghten	Irish
Onary	Irish
Oneal	Irish
Oneale	Irish
Oneary	Irish
Onee	Irish
Oneil	Irish	The descendants of 'Neil,' that is, t...
Oneilan	Irish
Oneill	Irish
Oneligan	Irish
Onery	Irish
Onley	Irish	Local: Of Onely, a hamlet in the pari...
Only	Irish	Local: Of Onely, a hamlet in the pari...
Onoone	Irish
Onunan	Irish

Name	Origin	Meaning
Onyhan	Irish
Oogan	Irish
Openshaw	Irish	Local: Of Openshaw, a perish and vill...
Opray	Irish
Oprey	Irish
Oprunty	Irish
Oquane	Irish
Oqueally	Irish
Oquigg	Irish
Oquigley	Irish
Oquilty	Irish
Oquinlan	Irish
Oquirke	Irish
Orable	Irish	The son of Orable, a variant of Arabl...
Orafferty	Irish
Orafter	Irish
Orahilly	Irish
Oram	Irish	Local: Of Oram. There are North and S...
Oratigan	Irish
Orbel	Irish	The son of Orable, a variant of Arabl...
Orbell	Irish	The son of Orable, a variant of Arabl...
Orby	Irish	Local: Of Orby, a parish in diocese L...
Orchard	Irish	Local: At the orchard. Many local ter...
Orchardson	Irish	A curious patronymic; perhaps a corru...