This is a list of Japanese football J3 League transfers in the winter transfer window 2019–20 by club.
J3 League
Kagoshima United FC
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
FC Gifu
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Fujieda MYFC
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Kataller Toyama
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Roasso Kumamoto
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Gainare Tottori
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Blaublitz Akita
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Nagano Parceiro
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Vanraure Hachinohe
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Fukushima United FC
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Azul Claro Numazu
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
YSCC Yokohama
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Kamatamare Sanuki
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
SC Sagamihara
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Iwate Grulla Morioka
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
FC Imabari
Out:Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.