61st Regiment

• 61st Air Defense Artillery Regiment
• 61st Anti-aircraft Missiles Regiment (Romania)
• 61st Cavalry (India)
• 61st Cavalry Regiment (United States)
• 61st Georgia Volunteer Infantry
• 61st Illinois Volunteer Infantry Regiment
• 61st Indiana Infantry Regiment
• 61st Infantry Regiment (Finland)
• 61st Infantry Regiment (United States)
• 61st New York Volunteer Infantry
• 61st Ohio Infantry
• 61st Pennsylvania Infantry
• 61st Pioneers
• 61st Regiment Massachusetts Volunteer Infantry
• 61st Regiment of Foot (disambiguation)
• 61st Virginia Infantry
• British Army
• British Indian Army
• Finnish Army
• Indian Army
• Romanian Land Forces
• United States Army