The hostels, or Halls of Residence, at IIST provide a nurturing environment that truly serves as a home away from home for its residents. These spaces are where new ideas are born, cherished memories are made, and lifelong friendships take root. As a fully residential campus, IIST hosts 11 well-designed hostels named after mythological star constellations (Nakshatras), offering students comfortable and convenient accommodation.

Of the 11 hostels, three are designated for girl students and eight for boys. Accommodation is provided in single, double, and triple occupancy depending on the program. Hostel allotments are made at the beginning of each academic semester and are rotated annually to promote inclusivity and diversity.
In addition, the Dhanishta hostel includes 27 guest rooms equipped with attached washrooms and air conditioning, which cater to limited, urgent accommodation requirements for guests.

Currently, around 800 students reside in the hostels. Each hostel is equipped with reading rooms, national newspapers, LCD televisions with satellite connection, safe drinking water (both hot and cold), and uninterrupted 24-hour power supply with generator backup. The cleanliness and maintenance of individual rooms are the responsibility of the residents. All hostels are Wi-Fi enabled, providing seamless access to the internet, the digital library, and other online learning resources. Four laundry huts are also available near the hostels for student use, including space for installing personal washing machines.