Jacob Snider (January 1, 1811 – August 18, 1866) was an American mechanical engineer and inventor. He invented and patented a method of converting existing muzzle-loading rifles into breech-loading rifles, notably the Snider-Enfield. Originally from Montgomery Georgia, Snider later moved to Philadelphia, but died in poverty in Great Britain while attempting to recover promised compensation from the British government. He was survived by his wife Angelina and several sons, and is buried in Kensal Green Cemetery.