A total of 200 isolates of fungi belonging to fifteen species and four genera were isolated from one hundred and eighty five clinically positive pneumonic cases of buffalo calves. Aspergillus (7 species) was the most frequent genus. A. fumigatus, A. niger and A. flavus were the most common species. Mucor (4 species) was the second common genus. Rhizopus and Penicillium (2 species each) were the third and fourth common genera. Young animals are more susceptible to pulmonary fungal infection. About 38%, 24%, 21% and 16% of the positive cases were recorded in animals of different age ranging from 1-3, 3-6, 6-9 and more than 10 months, respectively.