Callan

Callan is a name with multiple uses. It is a surname of Irish origin derived from the Gaelic Ó Ceallacháin, meaning descendant of Ceallachán, and is also used as a given name. The surname is found among people of Irish descent and in Ireland.

Callan is a market town in County Kilkenny, Ireland.

Callan (TV series) is a British television spy drama produced for the BBC, created by James Mitchell. It aired from 1967 to 1972. It starred Edward Woodward as David Callan, an undercover operative.

The series is remembered for its gritty tone and morally ambiguous themes, and it helped establish espionage drama in British television. A feature film adaptation was released in 1974.