Gurdwara Bangla Sahib (listen^ⓘ) is one of the most prominent Sikh gurdwaras, or Sikh house of worship, in Delhi, India, and known for its association with the eighth Sikh Guru, Guru Har Krishan, as well as the holy pond inside its complex, known as the "Sarovar." It was first built as a small shrine by Sikh General Sardar Baghel Singh in 1783, on the bungalow donated by king Raja Jai Singh of Amer, who supervised the construction of nine Sikh shrines in Delhi in the same year, during the reign of Mughal Emperor, Shah Alam II.^[1]

It is situated near Connaught Place, New Delhi on Baba Kharak Singh Marg and it is instantly recognisable by its golden dome and tall flagpole.

Gurdwara Bangla Sahib was originally a bungalow belonging to Raja Jai Singh, a Rajput ruler in the seventeenth century, and was known as Jaisinghpura Palace, in Jaisingh Pura, an historic neighbourhood demolished to make way for the Connaught Place, shopping district.^[2] Since Guru Har Krishan stayed at Raja Jai Singh's Banglow (pronounced "bangla" in Hindi and Punjabi) which has now been converted to a gurdwara, now the gurdwara is called the Bangla Sahib to memorialise Guru Har Krishan's stay here.^[3]

The eighth Sikh Guru, Guru Har Krishan resided here during his stay in Delhi in 1664. During that time, there was a smallpox and cholera epidemic, and Guru Har Krishan helped the suffering by giving aid and fresh water from the well at this house. Soon he too contracted the illness and eventually died on 30 March 1664. A small tank was later constructed by Raja Jai Singh over the well, its water is now revered as having healing properties and is taken by Sikhs throughout the world back to their homes.^[3]

The gurdwara and its Sarovar are now a place of great reverence for Sikhs, and a place for special congregation on birth anniversary of Guru Har Krishan.

In March 2021, the gurdwara inaugurated the cheapest diagnostic centre with the aim to provide healthcare for the poor. The patients can get an MRI scan at ₹50.^[4]

In 1984, during the anti-Sikh riots, some 150 Sikhs took sanctuary inside the gurdwara. An angry mob carrying cans of gasoline, attempted to storm into the temple, but were driven back.^[5]

This section does not cite any sources. (March 2020)

The grounds include the Gurdwara, a kitchen, a large (holy) pond, a school, and an art gallery. As with all Sikh Gurdwaras, the concept of langar is practised, and all people, regardless of race or religion may eat in the Gurdwara kitchen (langar hall). The Langar (food) is prepared by gursikhs who work there and also by volunteers who like to help out. At the Gurdwara, visitors are requested to cover their hair and not to wear shoes. Assistance to foreigners and visitors with Guides, head scarves, and shoe-minding service can be found inside the compound and are available free of charge. Anyone can volunteer to help keep the shoes in the shoe-minding room, and cleaning the precincts of the Gurdwara.

The complex also houses a higher secondary school, Baba Baghel Singh Museum, a library, and a hospital. The Gurdwara and the langar hall are now air-conditioned. A new "yatri Niwas" (travellers hostel), and multi-level parking space have been constructed. Toilet facilities are available. The space around the back entrance to the Gurdwara is also being spruced up, so as to give a better view from the roadside.