India–United States relations (or Indo-American relations) refers to the international relations that exist between the Republic of India and the United States of America.

Despite being one of the pioneers and founding members of the Non-Aligned Movement of 1961, India developed a closer relationship with the Soviet Union during the Cold War. During that period, India's relatively cooperative strategic and military relations with Moscow and strong socialist policies had a distinctly adverse impact on its relations with the United States. After the dissolution of the Soviet Union in 1991, India began to review its foreign policy in an unipolar world, and took steps to develop closer ties with the European Union and the United States. Key recent developments include the very rapid growth of the India economy and the growth of trade, the close links between the Indian and American computer and internet industries, and the reversal in 2008 of the long-standing American opposition to India's nuclear programme. Today, India and the US share an extensive cultural, strategic, military, and economic relationship.

According to Gallup's annual public opinion polls, India is perceived by Americans as their 7th favorite nation in the world, with 72% of Americans viewing India favorably in 2011, increasing to 75% in 2012. As of 2012, Indian students form the second-largest group of international students studying in the United States, representing 13.1% of all foreigners pursuing higher education in America.