The 2005 Wests Tigers season was the 6th in the joint-venture club's history. They competed in the NRL's 2005 Telstra Premiership, captained by Scott Prince and coached by Tim Sheens. The Tigers finished the regular season in 4th position before reaching the 2005 NRL grand final, their first. After a Clive Churchill Medal-winning performance by Prince, Wests won and claimed their maiden premiership.