Brigadier General and Brevet Major General Henry Goddard Thomas (April 5, 1837 – January 23, 1897) was a Union general in the American Civil War. A native of Portland, Maine, Thomas graduated from Amherst College in 1858 and was admitted to the bar shortly thereafter. He enlisted as a private in the 5th Maine Volunteer Infantry Regiment. Promoted to captain in June 1861, Thomas was present at the First Battle of Bull Run and the Peninsula Campaign among other battles. In February 1863, Thomas was appointed colonel of the 2nd Regiment Infantry U.S. Colored Troops. In December 1863, Thomas was appointed colonel of the 19th Regiment Infantry U.S. Colored Troops. On November 30, 1864, President Abraham Lincoln appointed Thomas a brigadier general of volunteers to rank from his appointment date. The President nominated Thomas for the appointment on December 12, 1864 and the U.S. Senate confirmed the promotion on February 23, 1865. Thomas was mustered out of the volunteers on January 15, 1866. On March 29, 1867, President Andrew Johnson nominated Thomas for appointment to the grade of brevet major general of volunteers for his service during the war, to rank from March 13, 1865, and the U.S. Senate confirmed the award on April 5, 1867. Henry Goddard Thomas died in January 23, 1897 in Oklahoma City Indian Territory (Oklahoma) and is interred at Evergreen Cemetery in Portland, Maine.
Thomas was the brother of diplomat and politician William W. Thomas, Jr.