3/4 or or may refer to:
The fraction three quarters () equal to 0.75
Arts and media 3/4 (film), a 2017 Bulgarian film time, a form of triple metre in music 3/4 profile, in portraits 3/4 perspective, in video games 3/4 (single album), a single album by South Korean band Onewe
Other uses ″ 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 Three fourths, alternative name for Capri pants