List of Iowa Civil War units

This is a list of American Civil War units from Iowa which fought in the Union Army. A total of 48 infantry regiments, nine cavalry regiments, and four artillery batteries were raised from Iowa.

Infantry

 * 1st Iowa Infantry Regiment
 * 1st Iowa Infantry Regiment (African Descent)
 * 2nd Iowa Infantry Regiment
 * 3rd Iowa Infantry Regiment
 * 4th Iowa Infantry Regiment
 * 5th Iowa Infantry Regiment
 * 6th Iowa Infantry Regiment
 * 7th Iowa Infantry Regiment
 * 8th Iowa Infantry Regiment
 * 9th Iowa Infantry Regiment
 * 10th Iowa Infantry Regiment
 * 11th Iowa Infantry Regiment
 * 12th Iowa Infantry Regiment
 * 13th Iowa Infantry Regiment
 * 14th Iowa Infantry Regiment
 * 15th Iowa Infantry Regiment
 * 16th Iowa Infantry Regiment
 * 17th Iowa Infantry Regiment
 * 18th Iowa Infantry Regiment
 * 19th Iowa Infantry Regiment
 * 20th Iowa Infantry Regiment
 * 21st Iowa Infantry Regiment
 * 22nd Iowa Infantry Regiment
 * 23rd Iowa Infantry Regiment
 * 24th Iowa Infantry Regiment
 * 25th Iowa Infantry Regiment
 * 26th Iowa Infantry Regiment
 * 27th Iowa Infantry Regiment
 * 28th Iowa Infantry Regiment
 * 29th Iowa Infantry Regiment
 * 30th Iowa Infantry Regiment
 * 31st Iowa Infantry Regiment
 * 32nd Iowa Infantry Regiment
 * 33rd Iowa Infantry Regiment
 * 34th Iowa Infantry Regiment
 * 35th Iowa Infantry Regiment
 * 36th Iowa Infantry Regiment
 * 37th Iowa Infantry Regiment - The "Graybeard Regiment"
 * 38th Iowa Infantry Regiment
 * 39th Iowa Infantry Regiment
 * 40th Iowa Infantry Regiment
 * 41st Iowa Infantry Regiment - Failed to complete organization and was not mustered into service.
 * 41st Battalion Iowa Volunteer Infantry
 * 42nd Iowa Infantry Regiment - Failed to complete organization and was not mustered into service.
 * 43rd Iowa Infantry Regiment - Failed to complete organization and was not mustered into service.
 * 44th Iowa Infantry Regiment - 100-day service regiment
 * 45th Iowa Infantry Regiment - 100-day service regiment
 * 46th Iowa Infantry Regiment - 100-day service regiment
 * 47th Iowa Infantry Regiment - 100-day service regiment
 * 48th Iowa Infantry Regiment - 100-day service regiment, failed to complete organization and was not mustered as regiment, see 48th Battalion Iowa Volunteer Infantry.
 * 48th Iowa Infantry Battalion - 100-day service unit

Cavalry

 * 1st Iowa Cavalry Regiment
 * 2nd Iowa Cavalry Regiment
 * 3rd Iowa Cavalry Regiment
 * 4th Iowa Cavalry Regiment
 * 5th Iowa Cavalry Regiment
 * 6th Iowa Cavalry Regiment
 * 7th Iowa Cavalry Regiment
 * 8th Iowa Cavalry Regiment
 * 9th Iowa Cavalry Regiment

Artillery

 * 1st Iowa Independent Battery Light Artillery
 * 2nd Iowa Independent Battery Light Artillery
 * 3rd Iowa Independent Battery Light Artillery - "The Dubuque Battery"
 * 4th Iowa Independent Battery Light Artillery