This is a list of Japanese football J1 League transfers in the winter transfer window 2017–18 by club.
J1 League Kawasaki Frontale
In:
Out:
Kashima Antlers
In:
Out:
Cerezo Osaka
In:
Out:
Kashiwa Reysol
In:
Out:
Yokohama F. Marinos
In:
Out:
Júbilo Iwata
In:
Out:
Urawa Red Diamonds
In:
Out:
Sagan Tosu
In:
Out:
Vissel Kobe
In:
Out:
Gamba Osaka
In:
Out:
Consadole Sapporo
In:
Out:
Vegalta Sendai
In:
Out:
FC Tokyo
In:
Out:
Shimizu S-Pulse
In:
Out:
Sanfrecce Hiroshima
In:
Out:
Shonan Bellmare
In:
Out:
V-Varen Nagasaki
In:
Out:
Nagoya Grampus
In:
Out:
References