During storage, peanut seeds face many problems including deterioration that creates favorable conditions for mold growth and mycotoxin production. This study describes the diversity of molds responsible for groundnut rot during commercialized in the city markets of Douala-Cameroon. Peanut samples were collected in a ten markets in the city of Douala. It has been noted that the postharvest fungal flora of groundnuts in the city of Douala is composed of various genre of molds. Many fungal species have been isolated and identified on peanut seeds commercialized in the study markets of the city of Douala. A total of six thousand fungal isolates (6000) were obtained in post-harvest culture. The main species are: Aspergillus flavus, Aspergillus niger, Fusarium oxysparum, Fusarium solani, Fusarium vinale, Penicillium, Mucor, Rhizopus stonifer and Rhizoctonia solani. Aspergillus is the most common genus (52%), of all samples whatever the geographic origin. All fungal groups are present in all markets of the city of Douala, and only differ in proportion. | Diversity of mold associated with the rotting of peanut (Arachis Hypogaea) during storage in some markets of Douala cameroon