The 2018 Adelaide Football Club season will be the Adelaide Football Club's 28th season in the AFL. It was also be its 2nd season in the AFL Women's and its 5th season fielding a reserves team in the SANFL. The men's team started the season successfully, winning the inaugural AFLX competition.

After only making one appearance at AFL level in the 2017 season, two-time club champion Scott Thompson decided to retire. Before trade period began, the Crows announced that they would not be renewing the contracts of Troy Menzel and Dean Gore. They also officially announced that Sam Shaw had been removed from the rookie list after being kept on it during the 2017 season for administrative reasons.

Days after Adelaide's grand final loss, Jake Lever requested a trade to Melbourne. Adelaide were able to secure two first round draft picks (one in the 2017 draft and one in the 2018 draft) for the key defender. The Crows then used the 2017 first round pick, along with their own, to bring Bryce Gibbs to the club from Carlton.Charlie Cameron requested a trade to Brisbane Lions, but it wasn't until the final hour of the trade period that he was traded in exchange for pick 12 in the 2017 draft. During the trade period Adelaide also traded Harrison Wigg for Pick 39 and brought North Melbourne veteran Sam Gibson into the side in exchange for Pick 91.

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