Slender or rock
Callen is a modern English name with roots in Gaelic and Scottish traditions. It is often considered a variant of the Irish name Callan, meaning 'slender', or derived from the Scottish surname MacCallen, which relates to the name Colin or 'rock'.
Healthcare activist and namesake of the Callen-Lorde Community Health Center
G. Callen, the lead special agent in the series · NCIS: Los Angeles
US births per 5-year period, 1990–present (SSA data).
