SUMMARYTwo cases of human ringworm caused by the dermatophyte Trichophyton equinum var. autotrophicum are reported from victoria. This fungus has been recorded as a cause of ringworm in horses in Australia but infections in man are rare and this is the first report giving details of human infections in Australia. In one of these cases the fungus was also isolated from the patient's horse. Treatment with econazole nitrate was successful in this case.