1/9

1/9 may refer to:

  • 1/9 (number), a fraction (one ninth, 19)
  • 1st Battalion, 9th Marines, an infantry battalion of the United States Marine Corps
  • January 9 or September 1, depending on date format
  • Breaker 1/9, a song by Common
  • Former 1 (New York City Subway service) and 9 (New York City Subway service), which shared the same route
  • U.S. Route 1/9, in New Jersey

See also