2017-18 Central Coast Mariners FC season

The 2017–18 Central Coast Mariners FC season is the club's 13th season since its establishment in 2004. The club will participate in the A-League for the 13th time and the FFA Cup for the 4th time.

Pre-season
Immediately after the end of the 2016–17 season, it was announced that goalkeepers Paul Izzo and Ivan Necevski; and attacking players Roy O'Donovan and Fábio Ferreira would be leaving the club.