India's national football team represents one of the world's most populous nations and plays under the governance of the All India Football Federation (AIFF). Football has been played in the Indian subcontinent since the late nineteenth century, with the sport taking root during the British colonial era, particularly in West Bengal, where the Calcutta Football League — one of the oldest football leagues in Asia — was established. India was among the early Asian nations to participate in international football, with the national team's most celebrated period coming in the 1950s and 1960s when the side reached the 1948 London Olympics and competed in Asian-level competition with some distinction.
India is a country of extraordinary scale and diversity, with over 50,000 football clubs and academies operating across its 28 states and 8 union territories. The domestic pyramid is anchored by the Indian Super League (first tier) and the I-League (second tier), supported by numerous state-level competitions ranging from the Calcutta Football League in West Bengal to the Mizoram Premier League in the northeast — a region that has historically produced a disproportionate share of India's top footballers.
The identity of Indian football is defined by regional passion rather than a single dominant rivalry, with the northeastern states, Goa, and Kerala serving as the heartlands of the game. In the current era, sustained investment in club football through the ISL and expanded national development programmes has aimed to raise the standard of the game across the subcontinent.