2005 J.League Division 2

The clubs competed in the quadruple round-robin format for the top two promotion slots.

Thespa Kusatsu and Tokushima Vortis newly joined the J.League Division 2 from Japan Football League.

Twelve clubs play in a quadruple round-robin format, a total of 44 games each.

The clubs are ranked by points, and tie breakers are, in the following order: A draw would be conducted, if necessary.

League Division 2Notes:† Team played previous season in JFL.