Pat Donnellan (born 1941 in Dunmore, County Galway) is an Irish former sportsperson.
He played Gaelic football with his local club Dunmore McHales and was a member of the Galway senior inter-county team from 1960 until 1967.
His father, Michael Donnellan, won an All-Ireland medal with Galway in 1925.
Donnellan's brother, John, captained Galway to the All-Ireland title in 1964.
His nephew, Michael Donnellan, won All-Ireland medals with Galway in 1998 and 2001.