Bartlet et Ultimus "The Caboose" Sims (May 9, 1878 – January 6, 1934) was an All-Southern college football end for the Sewanee Tigers of , a member of its 1899 "Iron Men". He also kicked the extra points; his 11 extra points against Cumberland is still a school record. A documentary film about the 1899 Team and Sims' role was released in 2022 called Unrivaled: Sewanee 1899.
Bartlet et Ultimus Sims was born on May 9, 1878, in Bryan, Texas. It was said his parents named him "et Ultimus" as their last child.