3/4

3/4 may refer to:
 * The fraction (mathematics) three quarters (¾), equal to 0.75
 * 3/4 time, a form of triple metre in music
 * Three quarter pants
 * 3/4 perspective in video games
 * ¾" videocassette, better known as the U-matic format
 * March 4 (month-day date notation)
 * 3 April (day-month date notation)
 * 3rd Battalion 4th Marines, a unit in the United States Marine Corps