- TOKAI Holdings Corporation
- TOKAI CORPORATION
- TOKAI Communications Corporation
- TOKAI GAS CORPORATION
- TOKAI Cable Network Corporation
- ICHIHARA CABLE TELEVISION CORPORATION
- ATSUGI ISEHARA CABLE NETWORK CORPORATION
- LCV CORPORATION
- KURASHIKI CABLE TELEVISION Inc
- Toco Channel Shizuoka Corporation
- Tokyo Bay Network Co.,Ltd.
- Cable Television Tsuyama Co., Ltd.
- SENDAI CATV Co., Ltd.
- Energy Line Corporation
- Nissan Tri Star Construction, Inc.
- Tender Co., Ltd.
- Tokai Nondestructive Inspection Co., Ltd.
- Chuo Denki Construction Co., Ltd.
- Inoue Technica Co., Ltd.
- Marco Polo Inc.
- Wood Recycle Inc.
- FujiPro Co., Ltd.
- GUT Co., Ltd.
- NIKAHO GAS CORPORATION
- CYZE Inc.
- AM's Unity Inc.
- QUERY Co. Ltd.
- Tokaizosen-unyu Corporation
- TOKAI City Service Corporation
- TOKAI LIFE PLUS CORPORATION
- TOKAI Management Service Corporation
- JOYNET Co., Ltd.
- Net Technology Shizuoka Co., Ltd.
- Okinawa Cable Network Inc.
- J-support CO.,LTD
- UIS Inc.
- G&F Co.,Ltd