Abstract: A belt clamp for securing the free ends of a length of timing belt stock together to form an endless timing belt. The clamp consists of an inverted, U-shaped cover, a U-shaped base, and a fastener that passing through aligned, centrally located apertures in the cover and the base to draw the cover and base together, in an overlapping relationship. A plurality of recesses is formed on the upper surface of the base. A bed is centrally located on the base and interrupts the recesses. The free ends of a length of timing belt stock are placed on the bed, and are retained in fixed position by the pressure applied by the fastener as the cover and base are drawn together. Protrusions, such as ribs, teeth, or buttons, formed on one, or both sides, of the timing belt stock are pressed into the complementary recesses in the base.