The 2025 Yokohama F. Marinos season is the club's 52nd season in existence and the 43rd consecutive season in the top flight of Japanese football. In addition to the domestic league, Yokohama F. Marinos are participating in this season's editions of the Emperor's Cup, the J.League Cup and reached the quarter-finals of the AFC Champions League Elite. 
Transfers.
Pre-season.
In.
Transfers in
Loan in
Loan return (In) 
Out.
Transfers out
Loan out
Loan return (out)
Mid-season.
In.
Transfers in
Loan in
Loan return
Out.
Transfers out
Loan out
Competitions.
J.League Cup.
The 2025 J.League Cup was expanded so that all 60 J.League clubs would participate.