6/4

6/4 or 6-4 may refer to:

• June 4, a day of the year in month-day date notation
  • 1989 Tiananmen Square protests and massacre, also referred to the June Fourth Incident (Chinese: 六四事件)
• 6 April, a day of the year in day-month date notation
• ⁶
  ₄, a time signature comparable to ⁶
  ₈ or ³
  ₄ time
• State Highway 6–4 (Cuba), highway in Granma Province, Cuba