The name Isla is a girl's name of Spanish, Scottish origin meaning "island". Isla originated in Scotland as a derivation of Islay, the name of one of the country’s islands. The etymology of Islay is unknown, but it is believed to have pre-Celtic origins. Isla is also considered to have Spanish roots, as isla is the Spanish word for island. Isla is the name of a Scottish river, an island (spelled Islay), and the hot young red-haired actress Isla Fisher, wife of Sacha Baron Cohen. Isla is also popular overseas, especially in England, Wales, and her native Scotland. Isla Black Hitchens is a Harry Potter character; Queen Elizabeth has a great-granddaughter named Isla Elizabeth Phillips. Is Isla's newborn popularity a plus or a minus? Only you can decide, though the parent who chooses Isla because they've never heard it before and believes they rarely will again is sure to be disappointed. Isla is part of a trend for simple, old-fashioned girls’ names that start and end with a vowel: Ava, Ada, Ella, Emma, Eva, Ida, Ivy. Some other similar names that are not as trendy as Isla: Islay and Ailsa.