First Amendment (disambiguation)
- 2004 Georgia Amendment 1
- 2004 Kentucky Amendment 1
- 2004 Louisiana Amendment 1
- 2004 Mississippi Amendment 1
- 2005 Kansas Amendment 1
- 2006 Tennessee Amendment 1
- 2012 Minnesota Amendment 1
- Constitution Alteration (Senate Elections) Act, 1906
- First Amendment of the Constitution of India
- First Amendment of the Constitution of Ireland
- First Amendment of the Constitution of South Africa
- First Amendment to the Constitution of Pakistan
- First Amendment to the United States Constitution
- North Carolina Amendment 1
- South Carolina Amendment 1