The morphology, structure, and mode of occurrence of the Early Cretaceous nonmarine stromatolites from the Kanmon Group in northern Kyushu (SW Japan) and from the Gyeongsang Supergroup in South Korea are reviewed. These stromatolites were formed likely in intertidal–supratidal settings of a large intracontinental lake (the Kanmon–Gyeongsang Basin) that were occasionally exposed to arid condition. Seven macrostructures of stromatolite are recognized. In particular, three of them are dominant, i.e., flat type, columnar type, and domal type. The thickness of clastic layers of the stromatolites and the associated sedimentary facies suggest that the flux of terrigenous clastics into the depositional site may have controlled the morphological diversity of the stromatolites, i.e., the flat type occurred in very shallow nearshore (supratidal), while the domal type in relatively deeper, offshore (intertidal).