This is a list of Japanese football J3 League transfers in the summer transfer window 2018 by club.

Thespakusatsu Gunma

In:

Out:

Blaublitz Akita

In:

Out:

Azul Claro Numazu

In:

Out:

Kagoshima United FC

In:

Out:

Nagano Parceiro

In:

Out:

FC Ryukyu

In:

Out:

Fujieda MYFC

In:

Out:

Kataller Toyama

In:

Out:

Giravanz Kitakyushu

In:

Out:

Fukushima United FC

In:

Out:

SC Sagamihara

In:

Out:

YSCC Yokohama

In:

Out:

Grulla Morioka

In:

Out:

Gainare Tottori

In:

Out:

References