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'.
About 579 boys were named Callen in 2025.
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).
The same feel as Callen — far less common.
Hidden gems that stand out.
