Abstract: A post tensioning anchor plate assembly comprising an anchor plate and coupling elements therefor. The anchor plate is constructed with a pair of oppositely disposed, concentrically aligned cylindrical bosses, or mounting members, projecting from opposite sides of a generally rectangular plate. The oppositely disposed bosses define, on the inside surface thereof, a common tapered bore adapted for receiving a post tensioning cable therethrough and securement thereof for post tensioning of a concrete section. The outside surface of each boss is likewise constructed with a circumferential groove adapted for receiving an inwardly projecting lip of an appropriate plastic cap or tubular adapter secured thereover. In this manner, the plastic cap and tubular adapter can be mounted to opposite sides of the anchor plate in sealed engagement therewith for facilitating improved reliability of the post tensioning anchor plate assembly.