Introduction: HIV-AIDS pandemic continues to increase worldwide. Dermatomycoses in this group are more frequent than in the general population, emphasizing oral candidiasis and onychomycosis. Methods: we evaluated 100 adult patients diagnosed with HIV-AIDS and mucocutaneous fungal infections, in control at the Hospital Carlos van Buren of Valparaiso, Chile, during the years 2011 and 2012. Identification of filamentous fungi and yeast was performed by morphophysiology and biochemical tests. For statistical analysis programs used Microsoft Excel and Stata 10. Results: the mean age was 39.37 years. 88% were men. The most common locations were fingernail foot (29, 03%), oral cavity (21, 77%) and trunk (17, 74%). The most common species were Trichophyton rubrum (33, 06%), Candida albicans (25, 8%), Malassezia pachydermatis (9, 68%) and Trichophyton mentagrophytes (4, 83%). Conclusions: dermatomycoses in HIV-AIDS patients occurred mainly in men. The most common was foot onychomycosis and Trichophyton rubrum the most commonly isolated. Also highlights the isolation of Malassezia pachydermatis in tinea versicolor on the trunk of man.