Fungi associated with the coffee berry borer, Hypothenemus hampei (Ferrari), are determined and galleries in coffee fruit, Coffea arabica L., are described. In total, 13 fungus species were found to be associated with the coffee berry borer and its galleries. These fungi were divided into four functional groups: 1) saprobic fungi that the borer uses as food: Fusarium heterosporum Nees ex Fries, Cladosporium sp., Cladosporium oxysporum Berkeley & Curtis, and Penicillium echinulatum Fassatiová; 2) saprobic fungi that degrade borer feces: Aspergillus flavus Link, Aspergillus niger Tieghem, Mucor luteus Linnemann, Penicillium sp. 1, Humicola grisea Traaen, and Gliocladium penicilloides Corda; 3) fungi that are coffee parasites: Fusarium oxysporum Schlechetend and Fusarium solani (Martius) Saccardo; and 4) the entomopathogenic fungus Beauveria bassiana (Balsamo-Crivelli) Vuillemin. The same fungi were found on and inside the insect as well as in galleries and were components of the insect’s diet. Apparent interference of B. bassiana by F. solani was observed.