Yokohama F. Marinos is a Japanese professional football club based in Yokohama, Kanagawa Prefecture, part of the Greater Tokyo Area. The club competes in the J1 League, which is the top tier of football in the country.

Football is among the most popular sports in Japan, together with baseball, tennis, golf, sumo, and combat sports. Its nationwide organization, the Japan Football Association, administers the professional football leagues, including J.League, which is considered by many the most successful football league in Asia. Japan is also the country with the most comprehensively developed football in Asia in both men and women as well as in both futsal and beach soccer.