For national variants of the Cyrillic script, see Cyrillic alphabets. For other uses, see Cyrillic (disambiguation). The Cyrillic script /sáµ»ËrÉªlÉªk/ is a writing system used for various alphabets across eastern Europe and north and central Asia. It is based on the Early Cyrillic, which was developed in the First Bulgarian Empire during the 9th century AD at the Preslav Literary School.