Ethlin \e-th-lin\ as a girl's name is a variant of Ethel (Old English) and Ethelinda (Old German), and the meaning of Ethlin is "noble; noble serpent".

The baby name Ethlin sounds like Ethlyn and Ethelin. Other similar baby names are Edlin, Eaglin, Eibhlin, Eilin, Ellin, Elin, Emylin, Ethlynn, Ethelyn, Etheline, Ethylind, Ethlinda, Ethelind, Evlin, Evelin and Kathlin.