An automatic hook setting rod holder is comprised of a flat base supporting a rod holder that rotates vertically upward when a fish strikes a hook, thereby setting the hook. A torsion spring and bar assembly lies under the rod holder and is held in a pre-strike position by a trigger rod. The trigger rod is connected to the base and has a bearing surface to hold the loaded torsion spring and bar assembly in a pre-strike position. The trigger rod has a bent end to receive and hold the fishing line before a fish strike. Once a fish strikes, tension on the fishing line pulls and rotates the trigger rod away from the torsion spring and bar assembly, thereby releasing it and causing it to contact the rod holder, which in turn causes it to rotate upward and sets the hook in the fish's mouth.