9th Infantry
9th Infantry may refer to:

9th Bhopal Infantry, a regiment of the British Indian Army
9th Infantry Brigade (Greece)
9th Infantry Brigade (United Kingdom)
9th Infantry Brigade (Lebanon)
9th Infantry Division (Greece)
9th Infantry Division (India), a formation of the British Indian Army
9th Infantry Division (Philippines)
9th Infantry Division (Poland)
9th Infantry Division (South Korea)
9th Infantry Division (United States)
9th Infantry Regiment (United States)

