O'Byrne (surname)

O'Byrne (Ó Broin) is an Irish surname. The O'Byrne family were descendants of Bran mac Máelmórda, King of Leinster.

Notable people with the surname include:


 * Brían F. O'Byrne (b. 1967), Irish actor
 * Bryan O'Byrne (1931–2009), American actor
 * Cathal O'Byrne (1867–1957), Irish singer, poet and writer
 * Charles J. O'Byrne (b. 1959), American lawyer
 * David O'Byrne (b. 1969), Australian trade unionist and politician
 * Emmett O'Byrne (b. 1973), Irish historian
 * Fergus O'Byrne, Irish-Canadian folk musician
 * Fiach McHugh O'Byrne (1534–1597), Gaelic chieftain famed for his resistance to English rule in Ireland
 * Felim McFiach O'Byrne (d.1630), Gaelic chieftain
 * Gay Byrne (b. 1934), Irish radio and television presenter
 * John O'Byrne (1884–1954), Attorney General of the Irish Free State
 * Justin O'Byrne (1912–1993), Australian politician
 * Michelle O'Byrne (b. 1968), member of the Tasmanian House of Assembly
 * Patrick O'Byrne (pianist) (b. 1954), New Zealand pianist
 * Patrick O'Byrne (politician) (1870–1944), Irish politician
 * Ryan O'Byrne (b. 1984), Canadian ice hockey player
 * William O'Byrne (1908–1951), English cricketer
 * William Richard O'Byrne (1823–1896), Irish biographer