The Springfield Model 1888 was a trapdoor breechblock service rifle produced by the Springfield Armory for the United States military. Introduced in 1898, it was the final design in a long line of such weapons using a design developed by Erskine S. Allin in the 1860s, and the last single-shot rifle to see American military service.
Despite the replacement of the trapdoor rifles by the adoption of newer repeating rifles, they were manufactured until 1893 and saw combat during the Spanish–American War, a combat that was dominated by the newer Springfield Krag–Jørgensen bolt action rifle. The Model 1888, despite its aged technology, was built in large numbers and was also the most advanced and efficient of all the Springfield trapdoor rifles, and for this reason remains popular among military enthusiasts.