The general objective of this work is to perform the preliminary inventory of mercury in Cameroon in order to protect human health and the environment. To fulfill this general objective, the following activities were carried out based mostly on documentation existing (Dioxins and Furans Inventory Report, 2011; Impact of medical mercury-thermometers consumption on the mercury “hot spots” development in a setting lacking sound disposal capacities: Case of the healthcare sector in Cameroon: Draft paper by KUEPOUO Gilbert in CREPD; UN ComTrade database, and INS).We then identified the main sources