The Airtel Delhi Half Marathon is an annual half marathon foot-race held in New Delhi, India. Established in 2005, it is both an elite runner and mass participation event. It is an AIMS-certified course and is listed as a Gold Label Road Race by the IAAF. The 2014 event attracted around 32,000 runners who competed in one of the four races: the half marathon, the 7 km Great Delhi Run, a 4.3 km run for senior citizens, and a 3.5 km wheelchair race.

The half marathon is the elite runner race, while the Great Delhi Run attracts the majority of participants overall.

It is the largest single fundraising opportunity for NGOs in north India. Since establishment in 2004, Rs 23 Crore has been raised by over 150 NGOs. In 2014 Rs 3.65 Crore was raised