The following companies and organizations are the current members of i format forum.

【Administrators】　　
-in alphabetical order

Clarion Co., Ltd.
INCREMENT P CORPORATION
Mitsubishi Electric Corporation
Xanavi Informatics Corporation

【Auditor】　

PIONEER CORPORATION

【General Members】（15 Companies)
-in alphabetical order

Alpine Electronics, Inc.
DENSO CORPORATION
ESRI Japan Corporation
Hitachi, Ltd.
HONDA R&D Co.,Ltd.
NAVTEQ K. K.
Nippon Seiki Co., Ltd.
Nissan Motor Co., Ltd.
NTT DATA CCS CORPORATION
Oki Electric Industry Co., Ltd.
PASCO CORPORATION
RAMZES Corporation
Renesas Technology Corp.
SANYO Consumer Electronics Co.,Ltd.
TOYOTA InfoTechnology Center Co.,Ltd.

【Member Under Patronage】（2 institution)
-in alphabetical order

Reserch Center for Disaster Reduction Systems
Disaster Prevention Research Institute
Kyoto University

Research Center for Disaster Mitigation of Urban Cultural Heritage
Ritsumeikan University