This thesis shows the importance of glagolitic monuments of Istria and Kvarner because they serve as a proof of early presence of the glagolitic script in the spiritual, social and political lives. The thesis also presents the localities of the most significant monuments and the cultural projects connected to the glagolitic tradition. The glagolitic alphabet was used primarily as the script of the church, which can be concluded from the fact there were numerous liturgical manuscripts. However, the glagolitic alphabet can be found in legal as well as literary texts. Our monuments are written in three types of glagolitic letters: round, semi-round and angular glagolitic scripts (angular being the most recent type). The round type can be seen on the oldest and the most important monuments: The Plomin Inscription, The Grdoselo Fragment, The glagolitic alphabet graffiti in Roč, The Baška Tablet, The Krk Inscription and The Jurandvor Fragments. There are other glagolitic graffiti and they are a valuable glagolitic legacy because they tell about the many aspects of lives of medieval people. The glagolitic script is an inspiration to many scientists who study culture, history and language. Glagolitic Alley and The Baška Glagolitic Path stand out as tourist attractions and cultural sites. They are both evidence that Istria and the island of Krk were the centres of Croatian literacy and culture in the Middle Ages.