The stratigraphic sequence of the “Middle” Cretaceus Wasia Group in the Arabian Gulf, and the terminology used, is reviewed. Type sections and synonyms are established for the succession in the United Arab Emirates. An historical introduction provides a key to the understanding of the varied formational and member names in currnet use.Facies distribution maps show tha shallow‐water, predomantly carbonate belts extend across the whole region. Two clastic‐carbonate cycles are apparent in the NE part of the Gulf, the lower Nahr Umr‐Mauddud cycle and an upper Wara‐Mishrif cycle. The Upper cycle is surrounds a slightly deeper intracratonic basin which developed in late Albian‐Earllly Ce