Kaleb is a modern spelling of Caleb, a Hebrew name that literally means "dog" and is usually interpreted as "faithful" or "whole-hearted". In the Bible Caleb is one of the two spies who trust God and are allowed to enter the Promised Land. Kaleb ranked 141st in 2000, peaked at number 108 in 2009 and has eased since then to 295th place among boys' names in 2025.