Traces of Early Slavic beliefs in continental Croatia is a topic that many researches have studied over the past few decades. Even though the names of the Slavic gods have been fairly known, traces of religious customs can be found in many modern customs in villages and towns of Međugorje, Zagorje, Slavonia and Lika, and some have been described in this paper. One of the ways that the early Slavic people would choose their place of settlement was closely related to what we call Sacred triangles. These Sacred Triangles have been investigated and published in books and articles written by researchers such are Andrej Pleterski, Vitomir Belaj, Juraj Belaj and many others. Sacred Triangles are imaginary lines whose vertices connect three points in landscape. They can be connected to supreme gods such as Perun, Mokoš and Veles, or their children Jarilo and Morana. With exploration and research it had been discovered that many of toponyms have roots from the Early Middle Ages, or rather from the migration of Slavs to Croatia and that they are closely connected to the local myths and folklore. To the archeologists, the goal of these research is to find traces of sacred spaces, fields, hearths and burials. This paper deals with many examples of Early Slavic Sacred Triangles and customs which have been found in many forms and traces throughout the continental Croatia, especially those connected with weddings and burials. Even though material traces of Slavic beliefs have been found only in coastal Croatia, they tie in with the findings of continental Croatia.