Defence Act is a stock short title used in Australia, New Zealand, Ireland and the United Kingdom for legislation relating to territorial defence.

• The Defence Act 1903
• The Defence (Citizen Military Forces) Act 1943

• The Defence Act 1886 (No 17)
• The Defence Act 1990

• The Defence (Amendment) Act 2011
• The Defence (Miscellaneous Provisions) Act 2009
• The Defence (Amendment) Act 2007
• The Defence (Amendment) Act 2006
• The Defence (Amendment) Act, 1998
• The Defence (Amendment) Act, 1993
• The Defence (Amendment) Act, 1990
• The Defence (Amendment) Act, 1987
• The Defence (Amendment) Act, 1979
• The Defence (Amendment) (No. 2) Act, 1979
• The Defence (Amendment) Act, 1960
• The Defence (Amendment) (No. 2) Act, 1960
• The Defence Act, 1954
• The Civil Defence Act 2012
• The Civil Defence Act, 2002
• The Ombudsman (Defence Forces) Act 2004
• The Defence Forces (Pensions) (Amendment) Act, 1975
• The Defence Forces (Pensions) (Amendment) Act, 1968
• The Defence Forces (Pensions) (Amendment) Act, 1957
• The Defence Forces (Temporary Provisions) Act, 1954
• The Defence Forces (Temporary Provisions) Act, 1953
• The Defence Forces (Temporary Provisions) Act, 1952
• The Defence Forces (Temporary Provisions) Act, 1951
• The Defence Forces (Temporary Provisions) Act, 1950
• The Defence Forces (Temporary Provisions) Act, 1949
• The Defence Forces (Pensions) (Amendment) Act, 1949
• The Defence Forces (Temporary Provisions) Act, 1948
• The Defence Forces (Temporary Provisions) Act, 1947
• The Defence Forces (Temporary Provisions) Act, 1946
• The Defence Forces (Temporary Provisions) Act, 1945
• The Defence Forces (Temporary Provisions) Act, 1944
• The Defence Forces (Temporary Provisions) Act, 1943
• The Defence Forces (Temporary Provisions) Act, 1942
• The Defence Forces (Temporary Provisions) Act, 1941
• The Defence Forces (Temporary Provisions) Act, 1940
• The Defence Forces (Temporary Provisions) (No. 2) Act, 1940
• The Defence Forces (Temporary Provisions) Act, 1939
• The Defence Forces (Temporary Provisions) Act, 1938
• The Defence Forces (Pensions) (Amendment) Act, 1938
• The Defence Forces (Temporary Provisions) Act, 1937
• The Defence Forces Act, 1937
• The Defence Forces (Temporary Provisions) Act, 1936
• The Defence Forces (Temporary Provisions) Act, 1935
• The Defence Forces (Temporary Provisions) Act, 1934
• The Defence Forces (Temporary Provisions) (No. 2) Act, 1934
• The Defence Forces (Temporary Provisions) Act, 1933
• The Defence Forces (Pensions) Act, 1932
• The Defence Forces (Temporary Provisions) Act, 1931
• The Defence Forces (Temporary Provisions) (No. 2) Act, 1931
• The Defence Forces (Temporary Provisions) Act, 1930
• The Defence Forces (Temporary Provisions) Act, 1929
• The Defence Forces (Temporary Provisions) Act, 1927
• The Defence Forces (Temporary Provisions) (No. 2) Act, 1927
• The Defence Forces (Temporary Provisions) Act, 1926
• The Defence Forces (Temporary Provisions) Act, 1925
• The Defence Forces (Temporary Provisions) Act, 1923 (Continuance and Amendment) Act, 1924
• The Defence Forces (Temporary Provisions) Act, 1923

• The Defence (Transfer of Functions) Act 1964 (c. 15)

The Defence Acts 1842 to 1873 is the collective title of the following Acts:^[1]

• The Defence Act 1842 (5 & 6 Vict. c. 94)
• The Defence Act 1854 (17 & 18 Vict. c. 67)
• The Defence Act 1859 (22 Vict. c. 12)
• The Defence Act 1860 (23 & 24 Vict. c. 112)
• The Defence Act 1865 (28 & 29 Vict. c. 65)
• The Defence Acts Amendment Act 1873 (36 & 37 Vict. c. 72)

• Armed Forces Act
• List of short titles