Various versions of the South Africa Act, 1909, exist:
- as enacted on 20 September 1909 by the Parliament of the United Kingdom and as came into force on 31 May 1910.
- as amended on 12 May 1911 by the Exchequer and Audit Act, 1911.
- as amended on 2 June 1920 by the Appellate Division Act, 1920.
- as amended on 27 May 1925 by the South Africa Act, 1909, Amendment Act, 1925.
- as amended on 5 August 1925 by the South Africa Act, 1909, Further Amendment Act, 1925.
- as amended on 10 February 1926 by the Local Government (Provincial Powers) Act, 1926.
- as amended on 16 June 1926 by the Payment of Members of Parliament Act, 1926.
- as amended on 1 August 1926 by the Electoral Act, 1918, Amendment Act, 1926.
- as amended on 1 October 1926 by the Criminal and Magistrates' Courts Procedure (Amendment) Act, 1926.
- as amended on 29 March 1927 by the Administration of Justice (Further Amendment) Act, 1927.
- as amended on 1 August 1931 by the Rhodesia Appeals Act, 1931.
- as amended on 30 May 1932 by the Salaries Reduction Act, 1932.
- as amended on 1 April 1933 when the Salaries Reduction Act, 1932 ceased to have effect.
- as amended on 2 June 1933 by the South Africa Act Amendment Act, 1933.
- as amended on 26 June 1933 by the Financial Adjustments Act, 1933.
- as amended on 7 June 1934 by the South Africa Act Amendment Act, 1934.
- as amended on 22 August 1934 by the Status of the Union Act, 1934.
- as amended on 19 November 1934 by section 11(2) of the Status of the Union Act, 1934.
- as amended on 10 April 1935 by the Census Amendment Act, 1935.
- as amended on 10 May 1935 by the South Africa Act Amendment Act, 1935.
- as amended on 14 May 1935 by the General Law Amendment Act, 1935.
- as amended on 10 July 1936 by the Representation of Natives Act, 1936.
- as amended on 23 April 1937 by the Electoral Quota Act, 1937.
- as amended on 22 August 1938 by the South Africa Act Amendment Act, 1938.
- as amended on 20 May 1940 by the Constitution (Prevention of Disabilities) Act, 1940.
- as amended on 1 June 1940 by the Electoral Laws Amendment Act, 1940.
- as amended on 16 May 1941 by the Judges' Act, 1941.
- as amended on 22 April 1942 by the Electoral Quota Consolidation Act, 1942.
- as amended on 20 June 1945 by the Financial Relations Consolidation and Amendment Act, 1945.
- as amended on 12 April 1946 by the Electoral Laws Amendment Act, 1946.
- as amended on 13 May 1946 by the South Africa Act Amendment Act, 1946.
- as amended on 17 June 1947 by the Provincial Powers Extension Act, 1947.
- as amended on 9 April 1948 by the Powers and Privileges of Provincial Councils Act, 1948.
- as amended on 17 September 1948 by the Criminal Procedure Amendment Act, 1948.
- as amended on 4 March 1949 by the Deputy-Administrators Act, 1949.
- as amended on 12 May 1950 by the Privy Council Appeals Act, 1950.
- as amended on 30 June 1950 by the South Africa Act Amendment Act, 1950.
- as amended on 6 July 1951 by the South Africa Act Amendment Act, 1951.
- as amended on 4 June 1952 by the General Law Amendment Act, 1952.
- as amended on 1 July 1952 by the Electoral Laws Amendment Act, 1952.
- as amended on 1 January 1954 by the Bantu Education Act, 1953.
- as amended on 9 June 1954 by the South Africa Act Amendment Act, 1954.
- as amended on 25 March 1955 by the South Africa Act Amendment Act, 1955.
- as amended on 29 June 1955 by the Senate Act, 1955.
- as amended on 6 July 1955 by the General Law Amendment Act, 1955.
- as amended on 1 October 1955 by the Appellate Division Quorum Act, 1955.
- as amended on 2 March 1956 by the South Africa Act Amendment Act, 1956.
- as amended on 11 June 1956 by the Railways and Harbours Acts Further Amendment Act, 1956.
- as amended on 22 June 1956 by the General Law Amendment Act, 1956.
- as amended on 18 February 1957 by the South Africa Act Amendment Act, 1957 and the South Africa Act Further Amendment Act, 1957.
- as amended on 28 June 1957 by the General Law Amendment Act, 1957.
- as amended on 7 February 1958 by the South Africa Act Amendment Act, 1958.
- as amended on 3 October 1958 by the South Africa Act Further Amendment Act, 1958.
- as amended on 20 February 1959 by the Appellate Division Quorum Act, 1959 and the South Africa Act Amendment Act, 1959.
- as amended on 26 June 1959 by the South Africa Act Further Amendment Act, 1959 and the Offices of Profit Amendment Act, 1959.
- as amended on 1 July 1959 by section 1 of the South Africa Act Further Amendment Act, 1959.
- as amended on 1 January 1960 by the Supreme Court Act, 1959.
- as amended on 3 June 1960 by the Senate Act, 1960.
The Republic of South Africa Constitution Act, 1961 repealed most of the South Africa Act, and replaced it as the constitution of South Africa; a few of its provisions did however remain in force.
- as amended on 31 May 1961 by the Republic of South Africa Constitution Act, 1961.
- as amended on 30 June 1961 by the Payment of Members of Parliament Act, 1961.
- as amended on 18 February 1966 by the Admission of Advocates Act, 1964.
- as amended on 2 April 1969 by the South Africa Act Amendment Act, 1969.
- as amended on 13 April 1977 by the Pre-Union Statute Law Revision Act, 1977.
- as amended on 1 June 1979 by the Attorneys Act, 1979, which repealed the last remaining section.