This thesis presents an analysis of glyptic motifs of a religious nature attested on the Greek mainland in the Late Helladic period and on Crete post Late Minoan IB. Its purpose is to ascertain to what extent such an analysis can, firstly, expand our knowledge of religious practices in the Late Bronze Age Aegean, and, secondly, elucidate the nature of the relationship between Minoan Crete and Mycenaean Greece. This was achieved through the classification and analysis of five glyptic themes generally regarded as possessing religious significance in scholarship. These are anthropomorphic figures and non-anthropomorphic elements flanked by animals, seated women, figures with architecture, and animal sacrifice. This contention was critically appraised by developing a widely applicable methodology that demonstrated that many possessed religious aspects. The comparative analysis between the glyptic iconography of the Cretan Neopalatial Period and that of the Greek mainland and post-Late Minoan IB Crete identified specific changes that occurred from \(circa\) 1470 BCE onwards and established which of these originated on the mainland. As a result, I have defined a group of iconographic representations that provide specific information regarding religious practices in the Late Bronze Age Aegean and clarified the relationship between religious iconography and reality.