1st Michigan Infantry Regiment may refer to:
1st Michigan Infantry Regiment (3 Months), existed in 1861 1st Michigan Infantry Regiment (3 years), existed 1861-1865 1st Michigan Sharpshooters Regiment, existed 1863-1865 1st Michigan Colored Volunteer Infantry Regiment, existed 1864-1865
See also 1st Michigan Cavalry Regiment 1st Michigan Engineers and Mechanics Regiment List of Michigan Civil War units