The 2023 NRL Grand Final was the conclusive and premiership-deciding game of the 2023 National Rugby League season in Australia. It was contested between the Penrith Panthers and the Brisbane Broncos on Sunday the 1st of October at Accor Stadium in Sydney. Penrith, who were the two-time defending premiers and the defending minor premiers, won the match 26–24 to claim their fifth premiership title, and became the first club in forty years to win three consecutive first-grade premierships following the Parramatta Eels in 1983. Panthers halfback Nathan Cleary, who scored the winning try for his team, was awarded his second Clive Churchill Medal for being judged as the man of the match. The match gained significant notoriety for featuring the largest comeback victory in grand final history, with the Panthers overcoming a 24-8 deficit after 56 minutes by scoring 18 unanswered points to ultimately win the match.

The Penrith Panthers are an Australian professional rugby league football club based in the Greater Western Sydney suburb of Penrith that competes in the National Rugby League (NRL). The team is based 55 km (34 mi) west of the centre of Sydney, at the foot of the Blue Mountains. Penrith are the current reigning NRL Premiers, having won the title five times, including the last three times consecutively.