Fourth Amendment may refer to:
Fourth Amendment to the United States Constitution, prohibiting unreasonable searches and seizures Fourth Amendment of the Constitution of India, a 1955 amendment relating to property rights and trade Fourth Amendment of the Constitution of Ireland, which lowered the voting age from twenty-one to eighteen Fourth Amendment of the Constitution Bill 1968, a failed attempt to amend the Constitution of Ireland by abolishing proportional representation elections Australian referendum, 1946 (Social Services), the fourth amendment to the Constitution of Australia, extending the powers of the federal government over social services Fourth Amendment of the Constitution of South Africa, which made technical changes related to the election of provincial legislature and the National Council of Provinces Florida Amendment 4 (2018), the Voting Rights Restoration for Felons Initiative, a state constitutional amendment 2024 Florida Amendment 4, a failed abortion rights state constitutional amendment