A railgun is a weapon that uses electromagnetic force to launch high-velocity projectiles
Railgun or rail gun may also refer to:
Railway gun, a large artillery piece mounted on, transported by, and fired from a railroad car Benchrest rifle, also known as a rail gun, a rifle built into a machine rest Mikoto Misaka, also known as "Railgun", a fictional character in the light novel series A Certain Magical Index and the manga series A Certain Scientific Railgun