The Third Amendment of the Constitution of South Africa made changes to allow the creation of municipalities that cross provincial boundaries.
It was enacted by the Parliament of South Africa, signed by President Mandela on 20 October 1998, and came into force on the 30th of the same month.
The first allowed municipal boundaries to be established across provincial boundaries by the agreement of the national and the relevant provincial governments, and provided for national legislation to regulate the process.
Both of these clauses were removed by the Twelfth Amendment, at the same time as many provincial boundaries were altered.
87 of 1997, but the Citation of Constitutional Laws Act, 2005 renamed it and abolished the practice of giving Act numbers to constitutional amendments.