Vasant Vihar is a diplomatic and residential sub-division of the New Delhi district of Delhi, India. It is located near the diplomatic area of Chanakyapuri, and houses over 50 diplomatic missions of foreign countries, including the High Commission of South Africa, and embassy of Argentina.

It was originally developed in 1960s by retired Government of India officers, later developed as a posh residential locality like Air India And Indian Airlines Colony due to its proximity to diplomatic enclave of Chanakyapuri.

The four main streets in Vasant Vihar are Munirka Marg, Vasant Marg, Poorvi Marg and Paschimi Marg, literally Eastern and Western Street. These form a rough triangle that encloses much of the neighbourhood. The neighbourhood is primarily residential and when first planned consisted of six blocks named A to F, with each block having its own local market. Vasant Vihar has several parks in every block. The demographic of Vasant Vihar is primarily composed of wealthy business families, senior government officials, and high-net-worth individuals, contributing to its status as one of Delhi’s most exclusive neighborhoods.

Vasant Vihar also has schools such as Modern School, Delhi Public School (Junior Branch), The Shri Ram School (Junior Wing), Tagore International School, Guru Harkrishan Public School, Holy Child Auxilium School (Senior branch), Chinmaya Vidyalaya, Suraj Bhan DAV Public School, and Sarvodaya School.

The corporate office of Hero MotoCorp, formerly Hero Honda, is at Basant Lok in Vasant Vihar. In 1996, Vasant Vihar witnessed the opening of India's first McDonald's restaurant, it was also the first McDonald's restaurant in the world to not serve beef and pork based products.