A dormitory is a building primarily providing sleeping and residential quarters for large numbers of people such as boarding school, high school, college or university students. In some countries, it can also refer to a room containing several beds accommodating people.

In India the dormitories are called "PG housing" or "student hostels". Even though most of the colleges/universities have hostels on-campus, however in most of the cases it is not enough for the total students enrolled. Majority of the students prefer to stay off-campus in PGs and private hostels as they usually have better amenities and services.