Iliana is one of the vaguely but usually undefinably international names that have a wide range of spellings and pronunciations. Ilium was the poetic name of the city of Troy, and variations of this name — especially Ileana and Ileanna — have been widely used, projecting a rather bohemian image. The traditional Greek pronunciation would be ee-lee-AH-nah while in English speaking countries, it might be ill-ee-AH-nah.

Three syllables in only four letters is quite a feat, but that's exactly what you get with Ilia, a versatile, unisex option with various origins. It could derive from the Greek Iliana, which could denote someone from Illium, or it could be a feminine form of Ilian, a form of Elijah. Alternatively, it is a Basque form of Julia, or a Bulgarian feminine form of Ilya, with again links back to Elijah. Currently a gender neutral option in the US, it may be exclusively masculine elsewhere.