Abstract: An automatic fishing line casting system for casting a fishing line connected to an elongated fishing pole. The fishing pole having a reel and a plurality of eyelets mounted along a length of the fishing pole. The fishing line extends through each of the eyelets. The automatic fishing line casting system includes an elongated barrel that has open first and second ends. A peripheral wall extends between the open first and second ends defining a bore extending through the barrel. A projectile is removably positioned in the bore of the barrel and is couplable to a portion of the fishing line. A propellant is positioned in an interior of a cartridge for propelling the projectile from the barrel. A housing is mounted to the open first end of the barrel for holding the cartridge.