The 2011 Penrith Panthers season is the 45th in the club's history. They are competing in the NRL's 2011 Telstra Premiership. This year saw Phil Gould appointed as the Penrith Panthers' new football operations manager.
In 2011 the Panthers jerseys were again made by ISC. They retained their predominantly black home jerseys from 2010, but instead only was near fully black (Faint claw marks on either sides) with only teal on the collar and sleeves. The teal jersey of last year was to be used as the away jersey again, but was dumped in Round 4, for a white jersey with teal and black stripes and the same claw marks from the home jersey. The heritage jersey used was from their 1991 jersey. The "Pink Panthers" jersey used was based on the new away jersey, except absolutely everything on the jersey was made of different shades of pink.
Sanyo were again the major sponsor of the Panthers in 2011. Titan Warehousing Solutions were dropped as the sleeve sponsor with the club opting to go with no sponsor at all, until 17 April, when the club announced that Onsite Cleaning would be the 2011 sleeve sponsor.
Round 11 - (19–22 May) It was announced by both the NRL and Newcastle Knights that injured player Timana Tahu will link up next season with the Knights for 2 seasons.Lachlan Coote made his return from Osteitis pubis, marking the return with a try. Prior to the match during warm up, Travis Burns would have to withdraw after the team doctor gave him a pain injection, accidentally hitting the nerve causing Burn's leg to go numb.
Round 12 - (23–30 May) Round 12 couldn't have got off to a worse start with CEO Mick Leary would resign from his position effective immediately.
Round 13 - (4 June)Michael Jennings would play his 100th game in a bitter sweet win against Gold Coast Titans. Although it was a milestone in games, he would hobble off in the 60th minute after getting his leg stuck under a Titans player. He was ruled out for 4 weeks and missed Origin II and Origin III
Round 15 - (20 June) Matthew Elliott stepped down as Coach for the rest of the season, Steve Georgallis was named caretaker coach for the rest of the season. Daine Laurie was also released midweek due to behaviour. New signing Arana Taumata was also investigated by police after using a script pad he stole from the club doctor. Star centre Michael Jennings was also fined $10,000 for drinking whilst being injured
Round 16 - (2 July)Steve Georgallis would notch up his second win in as many games as the Panthers beat the Bulldogs 20-6. It was announced earlier in the week that Trent Waterhouse would leave the club for a 3-year deal at Warrington Wolves in the European Super League. It was also announced during the week that Ivan Cleary would take the head coach role with the club from next season.
Round 21 - (26 July)Petero Civoniceva would announce his return to the Brisbane Broncos in 2012, citing it was for his family. The Panthers would grant him a release with 1 year left on his contract.