Our alphabet is called the Roman alphabet , as compared with the Cyrillic and other alphabets . The Glagolitic alphabet was the initial script of the liturgical language Old Church Slavonic and became , together with the Greek uncial script , the basis of the Cyrillic alphabet . The Cyrillic alphabet is one of the most widely used modern alphabets , and is notable for its use in Slavic languages and also for other languages within the former Soviet Union .