The Caucasian Albanian script was used to write the language of Caucasian Albania (which is not the same as present-day European Albania). The Caucasian Albanian language was a dialect of Old Udi, which is closely related to the Eastern Samur branch of Lezgian.

The Caucasian Albanian script was an alphabet written from left to right with spaces between words. There were fifty-two letters in the alphabet. It is thought to have been based on Greek writing.