A unique anti-warping anti-sagging interlocking gate comprises: multiple triple-U-shaped-clamp bracket systems having front and rear plates and bracket tube nuts, multiple anti-warping anti-sagging interlocking-tube-nut hinge systems having crisscross 90-degree hinge tube nuts, multiple struts, a truss having cable ends and a cable clamp, and a truss-cable-clamp-hiding tunnel system. The front and rear plates and bracket tube nuts are for uniquely securing the triple-U-shaped-clamp bracket systems to the struts to prevent the interlocking gate from warping and sagging. The crisscross 90-degree hinge tube nuts are for uniquely interlocking the hinge systems to a fence post in two 90-degree interlocking directions and in five different crisscross interlocking elevations. The truss-cable-clamp-hiding tunnel system is for uniquely hiding the cable ends and a cable clamp inside one of the struts and under one of the triple-U-shaped-clamp bracket systems.