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
Oholohan	Irish
Ohood	Irish
Ohora	Irish
Ohoran	Irish
Ohorgan	Irish
Ohosey	Irish
Ohouneen	Irish
Ohourihane	Irish
Ohowley	Irish
Ohure	Irish
Ohurley	Irish
Okane	Irish
Okeady	Irish
Okearney	Irish
Okeary	Irish
Okeaveney	Irish
Okeefe	Irish	The descendant of Kief. 'Kief,' in th...
Okeeffe	Irish	Gentle.
Okeenan	Irish
Okeighron	Irish
Okell	Irish	The son of Ogle. Everything points to...
Okelleher	Irish
Okelly	Irish
Okenny	Irish
Okeover	Irish	Local: Of Okeover, county Stafford. T...
Okerin	Irish

Name	Origin	Meaning
Okerrigan	Irish
Okey	Irish	Local: At the oak-ey, i.e. the island...
Okie	Irish	Local: At the oak-ey, i.e. the island...
Okieran	Irish
Okill	Irish	The son of Ogle. Everything points to...
Okilleen	Irish
Okilsetter	Irish
Okinahan	Irish
Okinneally	Irish
Okirwan	Irish
Okissane	Irish
Okneafsey	Irish
Olahiff	Irish
Olalor	Irish
Olangan	Irish
Olanigan	Irish
Olarrissey	Irish
Olavin	Irish
Old	Irish	Nickname: The old. Also 'the son of O...
Oldaker	Irish	Local: At the old acre, i.e. the old ...
Oldershaw	Irish	Local: At the alder-shaw, more correc...
Oldfield	Irish	Local: At the old field; also 'of Old...
Oldham	Irish	Local: Of Oldham, the large and flour...
Oldis	Irish	The son of Aldus.