While there are small, isolated groups of speakers of Romance languages in other parts of the Balkans, like the Arumanians (also known as Macedo-Romanians) in North Macedonia and Greece, Romanian is the only Romance language spoken by a nation in the Balkan region.
It's important to note that while Romanian is a Romance language, it is not considered a "Latin" language like Spanish, French, or Italian. It belongs to the Eastern Romance languages, which are a distinct branch of the Romance family.