1. Spanish and English: It's a shortened form of the Spanish name Isabela and the English name Isabella, both meaning "pledged to God" or "God is my oath."
2. Scottish: In Scotland, Isla is a popular name for a river in the Highlands, which in turn derives from the Gaelic word "uisge" meaning "water." This origin has contributed to the name's growing popularity as a nature-inspired choice.
3. Arabic: There's also a connection to the Arabic word "ilāha," meaning "god," making Isla a potential name with religious significance.
4. Icelandic: The name could also stem from the Icelandic word "eyja," meaning "island."
The popularity of Isla has been steadily rising, especially in English-speaking countries. It's a name with a beautiful sound, a variety of potential origins, and a strong association with nature.