| The Nihon Ki-in, Kahoku Shimpo Publishing Co, WAGC Excutive Committee |
| Sendai City |
| The International Go Federation (IGF) |
| The Ministry of Foreign Affairs, Ministry of Education, Culture, Sports, Science and Technology, Japan Tourism Agency, Japan Foundation, Miyagi Prefectural Government, The Culture Foundation of Miyagi, Sendai Chamber Of Commerce And Industry, Sendai Tourism & Convention Bureau, Sendai International Relations Association, Sendai Cultural Foundation, Japan Broadcasting Corporation Sendai Station, Tohoku Broadcasting Company, Sendai Television Inc., Miyagi Television Broadcasting Co.,Ltd, Higashi Nippon Broadcasting Co.,Ltd, Date fm |
| East Japan Railway Company , Daiwa House Industry Co., Ltd. , Maeda Corporation , NTT Group , Igo & Shogi Channel Inc. |
| ANA , Japan Post Bank , Pandanet Inc. |
| The Tokyo Club , Miyagi International Association |
| The Kansai Ki-in , Miyagi Igo League , Kido Kondankai , Kuroki Goishiten |
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