George Hanger, 4th Baron Coleraine (13 October 1751 – 31 March 1824) was a British soldier, author, and eccentric.
George Hanger was born into a prosperous family in Gloucestershire, the third son in a family of seven children. His father was Gabriel Hanger, a member of parliament who in 1762 was created Baron Coleraine in the Peerage of Ireland.
As a younger son, Hanger's education was geared towards his entering the army. He was sent to Reading School and then Eton before going to the University of Göttingen. After joining the Prussian Army of Frederick the Great, he returned to England and in 1771 purchased an Ensigncy in the 1st Regiment of Footguards.
In the army Hanger gained the reputation of being a womaniser to the detriment of his military duties. In 1776 he purchased a lieutenantcy, but he retired in disgust after a more junior officer purchased promotion over him. He then purchased a captaincy in the Hessian Jägers and served throughout the American Revolutionary War, transferring to Sir Banastre Tarleton's British Legion as a major and as commander of its light dragoons. He served as aide-de-camp to Sir Henry Clinton during the siege of Charleston, South Carolina in 1776. In the Battle of Charlotte of 1780, Hanger commanded the legion due to Tarleton's illness, ordering it to ride into Charlotte, North Carolina without taking precautions to guard against surprise attacks. As a consequence, the legion's cavalry was badly mauled by Patriot militia that had set up an ambush in the town centre. Hanger was wounded in the battle, which he termed a "trifling insignificant skirmish". He shortly thereafter fell ill, probably with yellow fever, and was shipped to the Bahamas to recuperate.