30th Regiment

• 30 Squadron (disambiguation)
• 30th (Cambridgeshire) Regiment of Foot
• 30th Arkansas Infantry Regiment
• 30th Army (disambiguation)
• 30th Battalion (disambiguation)
• 30th Connecticut Infantry Regiment (Colored)
• 30th Division (disambiguation)
• 30th Field Artillery Regiment (Canada)
• 30th Field Artillery Regiment (United States)
• 30th Georgia Volunteer Infantry
• 30th Illinois Infantry Regiment
• 30th Indiana Infantry Regiment
• 30th Infantry Regiment (United States)
• 30th Iowa Volunteer Infantry Regiment
• 30th Light Dragoons
• 30th Maine Volunteer Infantry Regiment
• 30th Michigan Volunteer Infantry Regiment
• 30th New York Volunteer Infantry Regiment
• 30th Regiment Kentucky Volunteer Mounted Infantry
• 30th Regiment Massachusetts Volunteer Infantry
• 30th Wisconsin Volunteer Infantry Regiment
• XXX Corps (disambiguation)