Penrith Panthers are delighted to announce Trent Merrin has extended his contract with the club by a further two years.

The extension means the 26-year-old will remain with the Panthers until at least the end of the 2020 season.

"I am honoured and privileged to extend my stay at such a prestigious club," Merrin said.

"From just my short time being at the Panthers I know this is a club heading in the right direction.

"I consider myself extremely fortunate to be able to stay on this journey for another two years and witness the growth of the many talented young players coming through."

Merrin joined the Panthers on a three-year deal ahead the 2016 season.

The NSW and Australian representative forward has played 17 NRL games for the Panthers this year so far, averaging over 150 running metres and 30 tackles per game.

"Trent has been a wonderful acquisition for the Panthers this season," Panthers Executive General Manager Phil Gould AM said.

"Trent's original deal included an option in his favour for the 2018 season but we are delighted to know he will now be with us until at least the end of 2020.

"His contributions to this club, both on and off the field, have been outstanding.

"The fact that Trent has agreed to this early extension of his deal is a real vote of confidence in the potential he sees in our club."