Nelson Story, Sr. (April 4, 1838 – 1926) was a pioneer Montana entrepreneur, cattle rancher, miner and vigilante, who was a notable resident of Bozeman, Montana. He was best known for his 1866 cattle drive from Texas with approximately 1000 head of Texas Longhorns to Montana along the Bozeman Trail—the first major cattle drive from Texas into Montana. His business ventures in Bozeman were so successful that he became the town's first millionaire.