The Constitution (Amendment No. 27) Act, 1936 was an amendment to the Constitution of the Irish Free State that was intended to abolish the office of Governor-General, removed all reference to the King, and almost completely eliminated the King's constitutional role in the state. Under the Act most of the functions previously performed by the King and his Governor-General were transferred to various other organs of the Irish government. Henceforth, the only role retained by the King was as representative of the state in foreign affairs. The amendment passed through the Oireachtas at the same time as the External Relations Act, becoming law on 11 December 1936. Its long title was:
- An Act to effect certain amendments of the Constitution in relation to the executive authority and power and in relation to the performance of certain executive functions.