Om Puri was born on 18th Oct, 1950 in Ambala, Haryana to a Punjabi family. His father worked in the railways and in the Indian Army. Puri married Seema Kapoor, the sister of actor Annu Kapoor, in 1991, but their marriage ended after eight months. In 1993, he married again journalist Nandita Puri, with whom he had a son named Ishaan. Puri graduated from the Film and Television Institute of India, Pune. He was also an alumnus of the 1973 class of National School of Drama where Naseeruddin Shah was a co-student.