2018 Penrith Panthers season
The 2018 Penrith Panthers season was the 52nd in the club's history. Coached by Anthony Griffin and Cameron Ciraldo on caretaker basis and captained by Peter Wallace and James Maloney, the Panthers competed in the National Rugby League's 2018 Telstra Premiership.
Squad
Player transfers
A † denotes that the transfer occurred during the 2018 season.| Player | Signed from | Until end of | Notes |
| Adam Keighran | Canterbury-Bankstown Bulldogs | 2018 | |
| James Maloney | Cronulla-Sutherland Sharks | 2020 | |
| Tyrone Phillips | Canterbury-Bankstown Bulldogs | 2018 | |
| Jayden Walker | Cronulla-Sutherland Sharks | 2018 | |
| Andy Saunders† | Wentworthville Magpies | ||
| Siosifa Talakai† | South Sydney Rabbitohs |
| Player | Signed To | Until end of | Notes |
| Sitaleki Akauola | Warrington Wolves | 2019 | |
| Tim Browne† | Retirement | – | |
| Bryce Cartwright | Gold Coast Titans | 2021 | |
| Mason Cerruto | Canterbury-Bankstown Bulldogs | 2018 | |
| Tom Eisenhuth† | Melbourne Storm | ||
| Leilani Latu | Gold Coast Titans | 2020 | |
| Matt Moylan | Cronulla-Sutherland Sharks | 2021 | |
| Darren Nicholls | St. George Illawarra Dragons | 2019 | |
| Mitch Rein | Gold Coast Titans | 2018 | |
| Tony Satini† | Mount Pritchard Mounties | ||
| Lachlan Stein† | Newtown Jets | ||
| Peter Wallace† | Retirement | – |