Abstract: A multi-purpose dowel jig for positioning first and second workpieces to permit the drilling of corresponding dowel holes therein. The dowel jig includes a first member having a flat surface and a wall extending essentially perpendicular to the flat surface. The wall includes at least one bore hole therein which defines an axis extending essentially parallel to the flat surface. A second member or slide jig is slideably supported on the first member adjacent the flat surface and is slideable in the direction of the axis. The second member includes an upper surface facing the flat surface of the first member. The second member includes at least second and third bore holes therein. The second and third bore holes each define an axis with the axes of the second and third bore holes extending essentially perpendicular to and intersecting the axis of the first bore hole in the first member.