On 19 February 2021, the Melbourne Storm announced that Jesse Bromwich and Dale Finucane succeeded Cameron Smith, as co-captains of the club.
Melbourne claimed the J. J. Giltinan Shield for the fifth time as minor premiers, setting a number of club records (21 wins; 815 points).
Castore will produce new supporter wear and a new jersey for season 2021, the design was announced on 14 January 2021.
Among the special features Castore has incorporated in the new jersey is a lightning bolt design on the sleeve and the inclusion of a Big V logo on the inner collar as a continuation of the Our Home, Victoria acknowledgment which began during the 2020 season to honor Storm’s home state.
Special Round 7 - Melbourne wore a unique jersey with sublimated Anzac Day details including a large red Remembrance poppy, silhouettes of soldiers, and the Anzac Appeal logo.