Arin is a variant of Erin. Erin originates in Gaelic languages and means "from Ireland". As a feminine given name it has been used since the beginning of the 20th century and is currently a popular name in the United States, as well as in the United Kingdom. Originally, Erin derives from Eire, the Irish word for Ireland, and Erin is considered a romantic name Irish poets used for Ireland in the 19th century.