Kellan \k(el)-lan\ as a boy's name (also used as girl's name Kellan), is a variant of Kellen (Gaelic), and the meaning of Kellan is "slender".

The baby name Kellan sounds like Keelan, Kelan, Keillan, Keilan, Keallan, Kealan and Kellin. Other similar baby names are Kelvan and Mellan.