The 2009 Adelaide Thunderbirds season saw Adelaide Thunderbirds compete in the 2009 ANZ Championship. After winning ten games, Thunderbirds finished third, behind Melbourne Vixens and Waikato Bay of Plenty Magic, during the regular season. They subsequently defeated Southern Steel in the minor semi-final and Magic in the preliminary final before losing to Vixens in the grand final.
In March 2009, Adelaide Thunderbirds played in the 2009 SOPA Cup, hosted by Netball New South Wales at the Sydney Olympic Park Sports Centre. Thunderbirds finished second in the tournament behind New South Wales Swifts.
Adelaide Thunderbirds received a bye.