India competed at the 2020 Summer Olympics in Tokyo, Japan. Originally scheduled to take place from 24 July to 9 August 2020, the games were postponed to 23 July to 8 August 2021, due to the COVID-19 pandemic. India has appeared in every edition of the Summer Olympics since 1920, although it made its official debut at the 1900 Summer Olympics in Paris. The nation sent its largest-ever contingent of 126 competitors to the 2020 Games. To date, the 2020 Summer Olympics are the most successful Games for India since its first regular Olympics appearance in 1920, with Indian Olympians winning 7 medals. The Indian contingent participated in a record 69 events, and earned medals across 18 athletic disciplines.

Subedar Major Neeraj Chopra is an Indian track and field athlete, who is the reigning Olympic champion and World champion in Men's javelin throw. He is the first Asian athlete to win an Olympic gold medal in javelin and the first Asian to win gold in his event at the World Championship. A Junior Commissioned Officer Subedar (JCO) in the Indian Army, Chopra is the first track and field athlete to win a gold medal for India at the Olympics. He is also the first track and field athlete from India to win at the World Under-20 Championships, where in 2016 he achieved a world U20 record throw of 86.48 m, becoming the first Indian athlete to set a world record.