अपराधी माणसाला त्याने केलेल्या गुन्ह्यासाठी न्यायालयाने दिलेली बंदीवासाची शिक्षा भोगण्याच्या जागेला तुरुंग म्हणतात. तुरुंगाभोवती सहसा भेद न करता येणाऱ्या एकामागे एक अशा दोन दगडी तटबंद्या असतात. आतील भागात कैद्यांना ठेवण्यासाठी कोठड्या असतात.

A prison, also known as a jail, gaol, penitentiary, detention center, correction center, correctional facility, or remand center, is a facility where people are confined against their will and denied their liberty under the authority of the state, generally as punishment for various crimes. Authorities most commonly use prisons within a criminal-justice system: people charged with crimes may be imprisoned until their trial; those who have pled or been found guilty of crimes at trial may be sentenced to a specified period of imprisonment.