Maternal nutritional status and health disorders are important matters of concern in both developing and underdeveloped countries. Various methods of nutritional assessment have been conducted to derive information regarding such issues. Mid-upper arm circumference (MUAC) is one of them. This review has attempted to provide an insight of how successful this method has been able to predict maternal nutritional status, their pregnancy outcomes and other health disorders. The present review has attempted to document and analyze the publications on the study and validation of mid-upper arm circumference (MUAC) for predicting and/or screening the nutritional status of pregnant women and its associated pregnancy outcomes. This review has also approximated number of studies conducted in various continents and on various areas of research field. An attempt has also been made to focus on the importance of MUAC in these issues and further discussion on other pertinent issues like problems faced due to non-availability of universally accepted cut-off points, the advantages and disadvantages of using MUAC in such studies and diagnostic test of accuracy of maternal MUAC in this regard.