HMMP Views 8 meanings found HMMP stands for Hazardous Materials Management Plan or related program/process, commonly used by businesses and agencies to outline safe handling, storage, and disposal of dangerous substances. Medical Houston Medical Monitoring Project Miscellaneous Houston Morbidity Monitoring Project Academic & Science Hazardous Materials Management Plan Computing HyperMedia Management Protocol Business Hazardous Material Management Program Hazardous Materials Management Process Hazardous Material Management plan Hazardous Materials Management Plans