Jonny Hepworth (born 25 December 1982) is an English former rugby league and rugby union footballer. He played club level rugby union (RU) for Leinster Rugby, Clontarf FC, Leeds Tykes, and, Rotherham R.U.F.C., and club level rugby league (RL) for Castleford Panthers ARLFC, Leeds Rhinos, London Broncos, Castleford Tigers and Featherstone Rovers.

He was born in Castleford. He currently plays for the Featherstone Rovers. Hepworth previously played for the Leeds Tykes, making his début for them at Headingley Carnegie Stadium against London Welsh on 3 September 2006 at the start of the 2006–07 National League 1 season.

Before making his full début for Leinster against Edinburgh in Dublin on 6 November 2005 he said: "Apart from playing for a local team in Wakefield when I was 15, coming on against Bath was my first competitive game. But I think I've adapted well and fitted in well here."

"I'm picking up bits as we go along and settling in well, hopefully I can make a full début today and show what I can do."

"If I was switching to be a union forward it'd be difficult, but as a utility back in league you can fit in more quickly. In league there's not much kicking, it's mainly just torpedo kicks when you're punting."

"But here everyone can kick and our coach David Knox has been helping me out with that."

He also featured for Clontarf in North Dublin. He then signed for the Leeds Tykes, joining up again with Daryl Powell, the Leeds Tykes' first team coach.

Hepworth joined the Rotherham R.U.F.C. for the 2010–11 RFU Championship, and made an immediate impression with his pace in possession and tenacious defence.