James Walker Fannin, Jr. (1804/1805 – March 27, 1836) was a 19th-century U.S. military figure in the Texas Army and leader during the Texas Revolution of 1835–36. After being outnumbered and surrendering to Mexican forces at the Battle of Coleto Creek, Colonel Fannin and nearly all his 344 men were executed soon afterward at Goliad, Texas, under Santa Anna's orders for all rebels to be executed.