The expression Number Four can refer to:
- 4 (number), a number, numeral, and glyph
- A hamlet in the town of Watson, New York
- #4, the pseudonym of American musician Jim Root, when performing with Slipknot
- A character from the Earthworm Jim video games and animated series
- Numbuh Four, a character from Codename: Kids Next Door
- A predominantly defensive position in polo
- A character also known as Simon in the reimagined Battlestar Galactica.
- A character in the 2011 film I Am Number Four
Famous quotes containing the word number:
“Mining today is an affair of mathematics, of finance, of the latest in engineering skill. Cautious men behind polished desks in San Francisco figure out in advance the amount of metal to a cubic yard, the number of yards washed a day, the cost of each operation. They have no need of grubstakes.”
—Merle Colby, U.S. public relief program (1935-1943)