Marriage Act may refer to a number of pieces of legislation:

• Marriage Act 1961, Australia's law that governs legal marriage.
• Marriage Amendment (Definition and Religious Freedoms) Act 2017

• Civil Marriage Act passed in Canada explicitly permitting same-sex marriages.

• Marriage Ordinance 1875
• Marriage Reform Ordinance 1970

• Special Marriage Act, 1954
• Hindu Marriage Act, 1955

• Marriage Act 1854, an early law in the colony governing marriage
• Marriage Act 1955, the current Act
• Marriage (Definition of Marriage) Amendment Act 2013

• Prohibition of Mixed Marriages Act, 1949, outlawing marriages between Whites and non-Whites
• Marriage Act, 1961, and its amending acts:
  • Marriage Amendment Act, 1964
  • Marriage Amendment Act, 1968
  • Marriage Amendment Act, 1970
  • Marriage Amendment Act, 1972
  • Marriage Amendment Act, 1973
  • Marriage Amendment Act, 1981
• Immorality and Prohibition of Mixed Marriages Amendment Act, 1985, repealing the 1949 prohibition
• Recognition of Customary Marriages Act, 1998, which recognised marriages under African customary law
• Civil Union Act, 2006, which extended marriage to same-sex couples

• Royal Marriages Act 1772 (E & W & S)
• Deceased Wife's Sister's Marriage Act 1907 (7 Edw. 7. c. 47) (UK)

Extent unknown by author:^{[clarification needed]}

• Marriage Act 1811 or the Marriage of Lunatics Act 1811 (51 Geo. 3. c. 37) (the second short title was conferred by the Short Titles Act 1896, s.1 & first Sch.)
• Marriage Act 1823 (4 Geo. 4. c. 76) (short title: 1896 Act, s.1)
• Marriage Act 1824 (5 Geo. 4. c. 32) (short title: 1896 Act, s.1)
• Marriage Act 1835 (5 & 6 Will. 4. c. 54) (short title: 1896 Act, s.1)
• Marriage Act 1836 (6 & 7 Will. 4. c. 85) (short title: 1896 Act, s.1)
• Births and Deaths Registration Act 1837 (7 Will. 4 & 1 Vict. c. 22) (short title: 1896 Act, s.1)
• Marriage Act 1840 (3 & 4 Vict. c. 72) (short title: 1896 Act, s.1)
• Marriage (Society of Friends) Act 1860 (23 & 24 Vict. c. 18) (short title: 1896 Act, s.1)
• Marriage Confirmation Act 1860 (23 & 24 Vict. c. 24) (short title: 1896 Act, s.1)
• Infant Marriage Act 1860 (23 & 24 Vict. c. 83) (short title: 1896 Act, s.1)
• Marriage (Society of Friends) Act 1872 (35 & 36 Vict. c. 10) (short title: 1896 Act, s.1)
• Greek Marriages Act 1884 (47 & 48 Vict. c. 20)
• Marriages Validity Act 1886 (49 & 50 Vict. c. 3)
• Marriages Act 1886 (49 & 50 Vict. c. 14)

The Marriage Acts 1811 to 1886 means the Marriage Act 1811, the Marriage Act 1823, the Marriage Act 1824, the Marriage Confirmation Act 1830, the Marriage Act 1835, the Marriage Act 1836, the Births and Deaths Registration Act 1837, the Marriage Act 1840, the Marriage and Registration Act 1856, the Marriage (Society of Friends) Act 1860, the Marriage Confirmation Act 1860, the Marriage (Society of Friends) Act 1872, the Greek Marriages Act 1884, the Marriages Validity Act 1886 and the Marriages Act 1886.^[1]

The Marriage Acts 1811 to 1929 was the collective title of the Marriage Acts 1811 to 1898 and the Age of Marriage Act 1929 so far as it related to England.^[2]

• The repealed Affirmation of Marriage Act in Virginia (1997)
• The overturned Defense of Marriage Act (1996)
• The failed Marriage Protection Act (2004)
• The Respect for Marriage Act (2022)

• List of short titles
• Marriage law