Baby Names Girl Names Meaning of the Name Kelin Updated January 22, 2026 by Jennifer M. Kelin Gender: Female Origin: American Meaning: Slender Boy ♥ Add to my Namelist What is the meaning of the name Kelin? The name Kelin is primarily a female name of American origin that means Slender Boy. Form of CaelanPeople who like the name Kelin also like: Aria, Celeste, Gemma, Clara, Chloe, Cecily, Emma, Adrian, Graham, Emery, Holden, Brice, Sebastian, Kellan Names like Kelin: Kallima, Kalenna, Kalliyan, Kellen, Kailani, Kilim, Kylene, Kakalina, Kolina, Kalin, Kealani, Kilenya, Koleyna, Keashyllin, Kailano, Kalona, Khalon, Kalena, Kaelin, Kailyn, Kaylyn, Kylan, Klahan, Kalyan, Kaelem, Kaloni, Kaelyn, Kahikilani, Kellan, Kylian Stats for the Name Kelin Kelin is currently not in the top 100 on the Baby Names Popularity Charts Kelin is currently not ranked in U.S. births