The 2005 San Diego Chargers season was the franchise's 36th season in the National Football League, and the 46th overall. The Chargers failed to improve on their 12–4 record in 2004, and finished the campaign 9–7 and 3rd overall in their division, missing out on the playoffs for the first time since 2003. Outside linebacker Shawne Merriman was named Rookie of the Year at the end of the season.