3/4

3/4 may refer to:
* The Fraction (mathematics) three quarters or 0.75 in decimal
* A 3/4 Time signature, see triple metre
* Three quarter pants
* 3/4 perspective in video games
* Channel 3/4 output
* 3/4" videocassette, better known as the U-matic format
* The calendar date March 4 (USA)
* The calendar date 3 April (UK)
* 3rd Battalion 4th Marines, a unit in the United States Marine Corps