The 2021 Cronulla-Sutherland Sharks season was the 55th in the club's history. The club was coached by Josh Hannay in an interim role and captained by Wade Graham. The team was initially coached by John Morris, who was relinquished of his duties following the signing of Craig Fitzgibbon as coach for the 2022 NRL season. The team competed in the National Rugby League's 2021 Telstra Premiership.