The Madras High Court is a High Court in India. It has appellate jurisdiction over the state of Tamil Nadu and the union territory of Puducherry. It is located in Chennai, and is one of the oldest high courts of India along with Calcutta High Court in Kolkata and Bombay High Court in Mumbai. The Madras High Court is one of four charter high courts of colonial India established in the four Presidency Towns of Madras, Bombay, Allahabad and Calcutta by letters patent granted by Queen Victoria, dated 26 June 1862. It exercises original jurisdiction over the city of Chennai, as well as extraordinary original jurisdiction, civil and criminal, under the letters patent and special original jurisdiction for the issue of writs under the Constitution of India. Covering 107 acres, the court complex is one of the largest in the world, second only to the Supreme Court of the United Kingdom. The four-storey administrative building attracts hundreds of litigants every day.

The high courts of India are the highest courts of appellate jurisdiction in each state and union territory of India. However, a high court exercises its original civil and criminal jurisdiction only if the subordinate courts are not authorized by law to try such matters for lack of peculiar or territorial jurisdiction. High courts may also enjoy original jurisdiction in certain matters, if so designated, especially by the constitution, a state law or union law.