The Twentieth Amendment may refer to the:
Twentieth Amendment to the United States Constitution (1933), established some details of presidential succession and of the beginning and ending of the terms of elected federal officials Twentieth Amendment of the Constitution of India (1966), relating to the appointment of judiciary Twentieth Amendment of the Constitution of Ireland (1999), provided constitutional recognition of local government Twentieth Amendment to the Constitution of Pakistan (2012) Twentieth Amendment to the Constitution of Sri Lanka (2020)