The 2023 Manly Warringah Sea Eagles season was the 74th in the club's history since their entry to the New South Wales Rugby League premiership in 1947.

Initially the situation started out with a change in assistant coaches with Chad Randall and Michael Monaghan leaving the club.

[1] A month later in October 2022, Des Hasler announced he threatened to sue Manly over the Manly pride jersey player boycott, as he believed that it derailed the season as a result of how there was little communication given between the playing group, coaching staff and the management about what was going on.

[6] On the 8th of November 2022, Seibold was officially announced as the head coach for the Sea Eagles.

[7] Extended squad Head coach Assistant coaches Managers Updated: 5 August 2023Source(s): Sea Eagles Team Profiles, 2023 Re-Signed: Josh Aloiai (2025), Daly Cherry-Evans (2025), Toluta'u Koula (2024), Karl Lawton (2024), Ben Trbojevic (2024), Kaeo Weekes (2023)