The highly cited researchers or scholars are either the corresponding author or the first author of their publications. Among all the researchers, only the top 300 in the field of materials science and engineering (MSE) are included in the list ranked by the total citations of their papers. The citation data are based on the Elsevier Scopus database. MSE Supplies (www.msesupplies.com) has compiled the ranking data and listed the names and institutions of these highly cited authors.