The Udi are a Lezgic people group native to the Caucasus that live mainly in Russia and Azerbaijan, with smaller populations in Georgia, Armenia, Kazakhstan, Ukraine, and other countries. Their total number is about 10,000 people. They speak the Udi language, which belongs to the Northeast Caucasian language family. Some also speak Azerbaijani, Russian, Georgian, or Armenian, depending on where they reside. Their religion is Christianity.