The Battle of North Fork or the Battle of the North Fork of the Red River occurred on September 28, 1872, near McClellan Creek in Gray County, Texas, United States. A monument on that spot marks the site of the battle between the Comanche Indians under Kai-Wotche and Mow-way and a detachment of cavalry and scouts under U.S. Army Colonel Ranald S. Mackenzie. There was an accusation that the battle was really an attempt "to make a massacre," as during the height of battle some noncombatants were wounded while mixed in with warriors.

Ranald Slidell Mackenzie, also called Bad Hand, was a career United States Army officer and general in the Union Army during the American Civil War. He was described by General Ulysses S. Grant as its most promising young officer. He also served with great distinction in the following Indian Wars.