The Age of Marriage Act 1929 (19 & 20 Geo 5 c 36) was an Act of the Parliament of the United Kingdom which increased the age of marriage to sixteen. It was passed in response to a campaign by the National Union of Societies for Equal Citizenship. The whole Act was repealed as to Scotland by section 28(2) of, and Schedule 3 to, the Marriage (Scotland) Act 1977. Corresponding provision was made for Northern Ireland by the .