The field survey was conducted to study on Butterflies occurrence during Monsoon season at Mysuru, Karnataka. Butterfly species were documented from March to September, 2020 by following standard methods. A total of 56 butterfly species belonging to 05 different families were recorded. Further, Family Nymphalidae records highest number of Butterfly species (39.29 %), followed by Pieridae (23.21%), Lycaenidae (21.43%) and Papilionidae (10.71%) families and least number of Butterfly species contributed by family Hesperiidae (5.36%). These butterflies were classified into Common (77%) and Rare (23%) based on abundance status. Interestingly, Butterfly species viz., Euploea core, Hypolimnas misippus, Cepora nerissa, Castalius rosimon and Pachliopta hector which are listed in Schedule I, II and IV of Indian Wildlife Protection Act (IWPA), 1972 were documented from the study area. Thus, the present study instigates further research on various aspects on Butterfly species during different seasons at Mysuru, Karnataka which is important from the Conservation point of view.