The report has been aimed to prepare a detail Quaternary stratigraphy of the deposits exposed in the three major cities Dhaka, Chittagong and Sylhet. Before going through the stratigraphic aspects, the understanding of the Quaternary needs to be discussed. Quaternary is the topmost Period of the Geological Times Scale. The forth Cenozoic Era includes Quaternary (top) and Tertiary (below). The Quaternary Period includes Pleistocene and Holocene Epochs. The whole Quaternary covers a small span of geological time, only 2.5 million years (my). The Holocene Epoch covers only the last 10,000 years. The present landscape and contemporary surroundings are the result of Quaternary evidences and neotectonics.