Abstract: Adjustable strike plate assemblies and systems and methods including the same are disclosed herein. The assemblies include a cover plate that defines a lock-facing side, an opposed striker-facing side, and a striker opening. The assemblies further include a striker that defines a bolt receptacle that is sized to receive a bolt of a lock. The bolt receptacle is aligned within the striker opening to define a bolt-receiving portion of the strike plate assembly. The assemblies further include an alignment structure that aligns the striker with the cover plate to define a plurality of orientations of the bolt receptacle relative to the striker opening. In operation, the striker-facing side of the cover plate generally faces toward the striker and the alignment structure. The assemblies further include a fastening structure that selectively retains the bolt receptacle in a selected orientation of the plurality of orientations.