The information about the death from pneumonia of monkeys kept in captivity for the period 2014-2017 is presented in this article. Frequency of pneumonia and seasonality are shown. A spectrum of microorganisms isolated from the lungs of dead monkeys was established. More than half of the isolated bacteria belonged to the Gram-negative microflora (61.4 %). The second place in the frequency of occurrence is Gram-positive coccal microflora (38.6 %). The prevailing microorganisms encountered in pneumonia were E. coli (40.0 %) and S. aureus (33.6 %), that were found both in monoculture and in associations. One of the features of pneumonia in monkeys is high frequency of polymicrobial associations. Most often S.aureus occurs in combination with E. coli and Proteus spp.