Sydney Swans assistant coach (2010–2017) After retiring as a player, Dew accepted a position with the
Sydney Swans as an assistant coach in 2010 under senior coach
Paul Roos and then under senior coach
John Longmire from 2011. He was part of the Sydney Swans 2012 premiership coaching panel. He remained with Sydney Swans until 4 October 2017.
Gold Coast Suns senior coach (2018–2023) Dew was announced as the senior coach of Gold Coast Suns on 4 October 2017. In Dew's first season as senior coach In the
2018 season, the Suns under Dew did not see improved results with on-field performance with a 17th finish on the ladder with four wins and 18 losses. In the
2019 season, the club's ladder position under Dew further deteriorated to finish in last place for the
wooden spoon with three wins and 19 losses. In the
2023 season, The Suns under Dew still showed no improved on-field performance sitting at 13th on the ladder with seven wins and nine losses after Round 17, 2023. On 11 July 2023, Dew was sacked as senior coach of Gold Coast Suns, following a 33 point loss to second-placed Port Adelaide in Round 17, 2023. Dew was replaced by assistant coach
Steven King as caretaker senior coach for the remainder of the 2023 season. Dew coached the Gold Coast Suns for just under 6 seasons to a total of 121 games with 36 wins, one draw and 84 losses to a winning percentage of 30 percent.
Brisbane Lions (2024–2025) In mid-2024 Dew was appointed as a part-time skills coach for the
Brisbane Lions following their difficult start to the
2024 AFL season. He was a member of the coaching staff during their premiership victory at the
2024 AFL Grand Final. He then signed on full-time as an assistant coach at the Brisbane Lions where he was a member of the coaching staff during their premiership victory at the 2025 AFL Grand Final.
Port Adelaide (2026–present) In late 2025 Dew left the Brisbane Lions and returned to the club he won his inaugural premiership as a player, , to assume the position of senior assistant coach with responsibility for managing the club's midfield players. ==In the media==