Matthew Farrelly is an Australian professional wrestler. He is signed to WWE, where he performs on the SmackDown brand under the ring name Grayson Waller. He is currently in a tag team with Austin Theory as A-Town Down Under where he is a former one-time WWE Tag Team Champion. Before signing with WWE, he previously performed on the independent circuit under the ring name Matty Wahlberg.

Outside of professional wrestling, Farrelly was a contestant on season six of Australian Survivor.