Concannon
Concannon (other spellings Concanen, Concanon, Conceanainn, Con Ceanainn, and Kincannon, among others) is an Irish family name. Notable people with the surname include:

 Brian Concannon (born 1963), human rights lawyer and foreign policy advocate
 Brian Concannon (hurler) (born 1997), Irish hurler
 Helena Concannon ( Walsh; 1878–1952), politician, historian, author and scholar. James Concannon (1890–1973), Australian politician
 John Concannon, Irish businessman
 Eóin Concannon (died 1954), king of the Claddagh
 Paddy Concannon (1918–2012), president of the ITCCA
 Susan Concannon (born 1958), American politician

Other spellings
 Muirgeas ua Cú Ceanainn (died 1037), king of Uí Díarmata and chief of the name
 Richard Luke Concanen (1747–1810), first bishop of New York, 1808–1810
 Edmund Concanon (1816–1902), Irish solicitor and town commissioner
 Tomás Bán Ó Conceanainn (1870–1946), writer and historian

See also 
 Concannon Vineyard, a winery in Livermore Valley, California
 Kincannon, a surname and variant of Concannon
 Uí Díarmata

Surnames of Irish origin