Portal:United States/Anniversaries/January/January 5
- 1911 – Kappa Alpha Psi, the world's second oldest and largest black fraternity, is founded at Indiana University.
- 1914 – The Ford Motor Company announces an eight-hour workday and a minimum wage of $5 per day, double what it was previously paying.
- 1925 – Nellie Tayloe Ross (pictured) of Wyoming becomes the first female governor in the United States.
- 1933 – Construction of the Golden Gate Bridge begins in San Francisco Bay.
- 1957 – In a speech given to Congress, President Dwight D. Eisenhower announces the establishment of what will later be called the Eisenhower Doctrine.
- 2005 – Eris, the largest known dwarf planet in the Solar System, is discovered by the team of Michael E. Brown, Chad Trujillo, and David L. Rabinowitz using images originally taken on October 21, 2003 at the Palomar Observatory in California.