Ninth Amendment may refer to the: Ninth Amendment to the United States Constitution, part of the Bill of Rights Ninth Amendment of the Constitution of India, 1961 amendment allowing transfer of territory to Pakistan in Berubari, West Bengal following certain treaties between the countries including the Nehru-Noon Agreement relating to India-East Pakistan enclaves Ninth Amendment of the Constitution of Ireland, extended the right to vote to certain non-citizens Ninth Amendment of the Constitution of South Africa