Lajpat Nagar is a residential and commercial neighborhood in the South East Delhi district of Delhi. It was named in honor of Lala Lajpat Rai and is today most known for the Lajpat Nagar Central Market. This area is not to be confused with the Lajpat Nagar in Ghaziabad in the NCR region.

Lala Lajpat Rai was an Indian revolutionary, politician, and author, popularly known as Punjab Kesari. He was one of the three members of the Lal Bal Pal trio. He died of severe head trauma injuries sustained 18 days earlier during a baton charge by police in Lahore, when he led a peaceful protest march against the British Simon Commission Indian constitutional reforms.