William Matthew Tilghman Jr. (July 4, 1854 – November 1, 1924) was a career lawman, gunfighter, and politician in Kansas and Oklahoma during the late 19th century. Tilghman was a Dodge City city marshal in the early 1880s and played a role in the Kansas County Seat Wars. In 1889 he moved to Oklahoma where he acquired several properties during a series of land rushes. While serving as a Deputy U.S. Marshal in Oklahoma, he gained recognition for capturing the notorious outlaw Bill Doolin and helping to track and kill the other members of Doolin's gang, which made him famous as one of Oklahoma's "Three Guardsmen".