CoworkingHokkaido
Garage labs
http://garage-labs.jp/
Facebook
Only IT and creative workers are accepted.
It costs free. Registration is required.
Dorinoki
http://sapporo-odori.jp/dorinoki/
Facebook
Coworking Cafe 36
http://coworkingcafe36.com/
Facebook
Coworking space Koharu Biyori
http://8share.jp/
Facebook
Asahikawa37
http://www.asahikawa37.com/
Facebook