CMSE may refer to:
China Manned Space Engineering, the space agency in charge of China's human spaceflight program Chris Mee Safety Engineering, an Irish health and safety company Compañía Minera San Esteban Primera, a Chilean mining company Southeastern Military Command (Comando Militar do Sudeste), a Brazilian Army military command The Center for Mathematics and Science Education, part of the Texas A&M University College of Science Clinique et Maternité Saint-Élisabeth de Namur, a department of the CHU UCLouvain Namur