Company profiles and links to respective websites are alphabetically listed.
* Companies including "NTT" as part of their name are listed with "NTT" omitted.
- Radishbo-ya CO., LTD.
- RagingWire Data Centers, Inc.
- Rainbow Development S.A.
- R-Cubic corporation
- Realize Corporation
- Recruit Company GmbH
- NTT RENTAL ENGINEERING CO., LTD.
- NTT Resonant Incorporated
- NTT Resonant Technology Inc.
- RMA Consulting Ltd
- Rumiscene (Proprietary) Limited
- RW Holdco Inc.
- RW Midco Inc.