Ó Ceallacháin
# Ó Ceallacháin

Ó Ceallacháin, anglicised Callihan, is an Irish surname. Notable people with the surname include:

* Seán Óg Ó Ceallacháin (1923–2013), journalist, author and broadcaster
* Bill Callihan (1916–1986), American football player
* Mike Callihan (b. 1947), Lieutenant Governor of Colorado
* Ryan Callahan, American hockey player
* Shane Callahan (b. 1995), American journeyman plumber
