This is a list of Japanese football J1 League transfers in the winter transfer window 2017–18 by club.
Ventforet Kofu
Albirex Niigata
Omiya Ardija
Avispa Fukuoka
Tokyo Verdy
JEF United Chiba
Tokushima Vortis
Matsumoto Yamaga
Oita Trinita
Yokohama FC
Montedio Yamagata
Kyoto Sanga
Fagiano Okayama
Mito HollyHock
Ehime FC
Machida Zelvia
Zweigen Kanazawa
FC Gifu
Kamatamare Sanuki
Renofa Yamaguchi
Roasso Kumamoto
Tochigi SC
References
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