91st Regiment or 91st Infantry Regiment may refer to:
- 91st Regiment of Foot (disambiguation), several units of the British Army
- 91st Punjabis (Light Infantry), a unit of the British Indian Army
- 91st Cavalry Regiment, United States
- 91st Coast Artillery (United States)
Union Army (American Civil War):
- 91st Illinois Volunteer Infantry Regiment
- 91st Indiana Infantry Regiment
- 91st New York Volunteer Infantry Regiment
- 91st Ohio Infantry
- 91st Pennsylvania Infantry
See also
Topics referred to by the same termThis disambiguation page lists articles about military units and formations which are associated with the same title. If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.
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