Harbhajan Singh Khalsa served the British Raj as a medical doctor. His mother, a Hindu, was named Harkrishan Kaur. His father was raised in the Sikh tradition and young Harbhajan was educated in a Catholic school run by nuns. Singh learned the fundamentals of Sikhism from his paternal grandfather, Bhai Fateh Singh. Theirs was a well-to-do landlord family, owning most of their village in the foothills of the Himalayas. His schooling was interrupted in 1947 by the violent partition of India, when he and his family fled to New Delhi as refugees. There, Harbhajan Singh attended Camp College – a hastily put together
Harbhajan Singh at the age of 15 years and 9 months for a youth One Day International against South Africa. He took 1/19 from seven overs in an Indian win. In 1996–97, Harbhajan was promoted to the Punjab Under-19s and he took 15 wickets at 20.20 in three matches, although he managed only two runs with the bat. This included match figures of 8/54 in an innings win over Jammu and Kashmir. Harbhajan made his first-class cricket debut in late 1997 against Services, during the 1997–98 Ranji Trophy season. He took a total of 3/35 in an innings win but was dropped