Jack Claffey (born 1990), best known as Jack Gallagher is an English professional wrestler and mixed martial artist. He is perhaps best known for his appearances at Futureshock Wrestling and Grand Pro Wrestling where he has won the FSW Championship and GPW British Champion respectively. He is also an accomplished tag team competitor winning the Futureshock Tag Team Championship with Alex Cyanide as Lethal Dose.
- Futureshock Wrestling Championship
- Futureshock Wrestling Tag Team Championship
- Grand Pro Wrestling Gallagher's Gold Championship
- Grand Pro Wrestling British Championship