2005 St. George Illawarra Dragons season

The 2005 St. George Illawarra Dragons season was the seventh in the joint venture club's history. The Dragons competed in the NRL's 2005 premiership season. The team finished second in the regular season, making finals but getting knocked out in the preliminary finals against the Wests Tigers, losing 20–12.

Notable events

 * After losing their first four matches of the season, the Dragons (who were sitting on the bottom of the ladder at the time) won their first match in round five, defeating the previously-undefeated Manly Warringah Sea Eagles (who were sitting on the top) by 32–6 in Wollongong.
 * In round twelve, St George Illawarra lost 16–24 to the Melbourne Storm at Olympic Park Stadium in Melbourne, a day after another red-and-white team, the Sydney Swans, were thrashed by at Telstra Dome.
 * In round fourteen, halfback Mathew Head suffered a season-ending knee injury in the club's 34–4 win over the North Queensland Cowboys. The result puts St George Illawarra into the NRL's top eight for the first time in the season.
 * In round eighteen, five-eighth and captain Trent Barrett copped a one-game suspension from the tribunal after pleading guilty to striking Parramatta Eels hooker PJ Marsh in the second half. The 40–14 defeat proves to be a major turning point in the club's season, as they would win their final seven games (including a 25–22 win over the Eels in the rematch at Jubilee Oval) to finish second on the ladder, behind the Eels on percentage.