Abstract: A shackle safety keeper for keeping the threaded eye bolt of closing a U-shaped shackle from rotation of the eye bolt and ultimate disengagement of the shackle. The shackle safety keeper is a single wire continuously bent to form the disclosed keeper. This wire is bent intermediate its two ends at a bowed spring portion. This bowed spring portion has two depending shackle engagement sections extending downwardly and at right angles from the bowed spring portion. These sections are for clamping to the side edges of the U-shaped shackle adjacent the protruding eye on the shackle bolt. The lower end of each shackle engagement section has protruding angularly outward therefrom two eye reaching legs. These eye reaching legs extend from the bottom of each shackle engaging section out into registry with the eye on the protruding bolt when it has closed the shackle. The two eye reaching legs end the all wire constructed keeper with two opposed and overlapping eye piercing lugs.