Dakshin Pustigasa is a village in Ramkrishnapur Union of Ullahpara Upazila, Sirajganj District in central Bangladesh. The population comprises about 1,500 people. Most of the people make their living through farming or agriculture work. There are some service holders also. There is one government primary school, one girls high school and one madrasah. Students of this village as well as students of nearby villages study in these schools.