Abraham Eustis (March 26, 1786 – June 27, 1843) was a lawyer and notable U.S. Army officer, eventually rising to become a Brevet Brigadier General.

He saw service in Florida and became a notable artillery specialist and the first commander of Fort Monroe, located at the entrance to the harbor of Hampton Roads in Virginia.

Later renamed Fort Eustis and now located in the independent city of Newport News, Virginia, it is part of an expanded and active facility, Joint Base Langley-Eustis.

[1] In 1830, Eustis became the first commander of Fort Monroe, which guards the entrance to Hampton Roads at Old Point Comfort in southeastern Virginia.

In May 1838, Eustis took command of Fort Butler, one of the main military posts built for the forced removal of the Cherokee known as the Trail of Tears.