The 3rd Michigan Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.

• Colonel Daniel McConnell
• Colonel Stephen Gardner Champlin
• Colonel Byron Root Pierce

• 3rd Michigan Volunteer Infantry Regiment (reorganized)
• List of Michigan Civil War Units
• Michigan in the American Civil War

• Third Michigan Infantry Research Project
• Biographies of Third Michigan Soldiers Online
• Michigan Units at The Civil War Archive