In this final work is given research of the genre designation of the most famous Gundulić' s drama, „Dubravka“, which was mostly specfied as a pastoral or as a melodrama and in the most recent time as a libretistic drama. After the literary theory of all three determinations and their characteristics, the term libretistic drama is ultimately shown as the most precise genre designation of this genre hybrid. Details that represent the reasons given in this conclusion are the textual replacement of the part which is in the original form intended for the musical performance, the hymn verses, then the extent of drama, which exceeds the number of 1500 verses, metrical diverse, commentation of the action by choir and the existence of dramatic persons and action. Gundulić' s Dubravka is considered as top in baroque in Croatian literature and literary canon, which indicates on fact that it is not an example of the work written in the past and forgotten, but contemporary scholars represent the drama with an interesting literary historical theme, placed in Dubrovnik 's background.