Article 343 of the Indian Constitution states that the official language of the Union shall be Hindi in Devanagari script.

The Official Languages Act, 1963 aims to promote the use of Hindi as the official language of the Union, protect the linguistic rights of minorities, and provide for the use of English as an associate official language.

Both Hindi and English are used as official languages in the Supreme Court of India.

The language of record in the High Courts of India can be Hindi, English, or the language of the state in which the High Court is located.

Article 348 of the Constitution allows for the use of regional languages in courts.

The Official Languages (Use for Official Purposes of the Union) Rules, 1976 aim to prescribe the use of Hindi in official communications of the Union Government, provide for the use of English as an associate official language, and promote the use of regional languages in official communications.

The language used in the subordinate courts of India can be Hindi, English, or the language of the state in which the court is located.

The Parliamentary Committee on Official Language reviews the progress made in the use of Hindi as the official language of the Union, makes recommendations for the promotion of Hindi as the official language of the Union, and protects the linguistic rights of minorities.

Both Hindi and English are used in the proceedings of the Parliament of India.

Both Hindi and English are used as the language of communication between the Union Government and the State Governments.

Both Hindi and English are used in the official gazette of the Union Government.

The language of instruction in central educational institutions can be Hindi, English, or any other language specified by the institution.

Both Hindi and English are used in the recruitment examinations conducted by the Union Public Service Commission.

Both Hindi and English are used as the language of communication between the Union Government and the public.

The language used in the proceedings of the state legislatures can be Hindi, English, the language of the state, or any other language specified by the legislature.