Background: Dermatophyte infections are common contagious diseases found in all over the world specially in tropical regions. Objective: Our objective was to study different forms of dermatophytosis in Ahwaz. Patients and Methods: We studied 100 cases of dermatophytosis whom were visited in a private skin clinic in 1372 to 1376 in Ahwaz. Results: Among 266 suspected patients sent for fungal examination, 100 dermatophyte cases (79 men and 21 women) were diagnosed. Tinea capitis was the most common tinea found in 34% specially in the boys and the most common fungal agent was Microsporum canis. Tinea cruris was found in 32% and was the most common form in men. The most important fungal agent was Epidermophyton fluccosum. The incidence of other forms were: tinea corporis 20%, tinea pedis 7%, tinea faciei 4%, tinea mannum 1%. Onychomycosis due to dermatophytes and tinea barbae were not found, but 2 cases of onychomycosis due to non-dermatophyte saprophytes were observed. Conclusion: Tinea capitis was the most common clinical form and zoophilic fungi were the most common etiologic agents of dermatophytosis in Ahwaz.