James Walker Fannin Jr. was an American military officer, planter and slave trader who served in the Texian Army during the Texas Revolution. After being outnumbered and surrendering to the Mexican Army at the Battle of Coleto Creek, Fannin and his fellow prisoners of war were massacred soon afterward at Goliad, Texas, under Antonio López de Santa Anna's orders. He was memorialized in several place names, including a military training camp and a major city street in Houston.

The Texian Army, also known as the Revolutionary Army and Army of the People, was the land warfare branch of the Texian armed forces during the Texas Revolution. It spontaneously formed from the Texian Militia in October 1835 following the Battle of Gonzales. Along with the Texian Navy, it helped the Republic of Texas win independence from the Centralist Republic of Mexico on May 14, 1836 at the Treaties of Velasco. Although the Texas Army was officially established by the Consultation of the Republic of Texas on November 13, 1835, it did not replace the Texian Army until after the Battle of San Jacinto.