A multi-functional golf swing training apparatus includes first and second arm braces that are adapted to be removably attached to user forearms respectively. A first mechanism is provided for pivotally mating the first arm brace to the second arm brace such that the first and second arm braces simultaneously pivot about a first axis. Such a first mechanism can be selectively toggled between unlocked and locked positions such that a desired angle is adjustably and fixedly defined between the first and second arm braces during the golf swing motion respectively. Further, a second mechanism may be provided for resiliently articulating the first and second arm braces about a second axis registered orthogonal to the first axis such that the first and second swivel mounts independently reciprocate along mutually exclusive arcuate paths adjoining the first and second arm braces respectively.