The 11th Vermont Infantry Regiment was a three-years infantry regiment in the Union Army during the American Civil War.

[1] It served in eastern theater, from September 1862 to August 1865.

The regiment was mustered into United States service on September 1, 1862, at Brattleboro, Vermont.

On December 10, 1862, its designation changed to the 1st Vermont Heavy Artillery.

[2] The unit was engaged in, or present at:[3] The regiment lost during service:[6] The regiment mustered out of service on August 25, 1865.