- S.C. ALLIANCE Inc.
- S.K.C.SANSHO CO., LTD.
- sachtler Japan Corp.
- SAEILO TELECOMMUNICATIONS, INC.
- SANKEN MICROPHONE CO., LTD.
- SANSHIN ELECTRONICS CO., LTD.
- SANTOKU CORPORATION
- SANWA CINE EQUIPMENT CO., LTD.
- SANYO ELECTRONIC INDUSTRIES CO., LTD
- SEIKA CORPORATION
- SEILLAC Co., Ltd
- SEKAIDO Co.
- SETTSU METAL INDUSTRIAL CO., LTD.
- ShibaSoku Co., Ltd.
- SHINKI Corporation
- SHOTOKU CORP.
- Sigma Systems Engineering Co., Ltd.
- Silicon Studio Corporation
- SINSEI SHOJI CO.,LTD.
- SLIK CORPORATION
- Smith Corporation
- Solid State Logic Japan K.K.
- Solid State Logic Japan K.K.
- Sony Corporation/Sony Marketing(Japan) Inc.
- Sony Finance International, Inc.
- SOUND JAPAN. Ltd
- STAGE INSTRUMENTS INC.
- Steinberg Media Technologies GmbH/YAMAHA CORPORATION
- Studer Japan Ltd.
- STUDIO EQUIPMENT CORPORATION
- SUGAWA VIDEO ENGINEERING CO., LTD
- Sumisho Computer Systems Corporation
- Sumitomo Shoji Machinex Co., Ltd.
- Sunmulon Co., Ltd.
- SUNMUSE
- Suzuki Enterprises Inc.
- SYSTEM FIVE CO., LTD.
- SYSTEM-ART.co.ltd.
- TAC SYSTEM, Inc.
- Taguchi Co., Ltd.
- Takahashi Construction Co., Ltd.
- TAKASAGO, LTD.
- TAKE Inc.
- TAMURA CORPORATION
- TC Electronic A/S Japan Branch
- TEAC Corporation
- Tec's Inc.
- TECHNICAL ELECTRON CO., LTD.
- Technical Farm
- Techno Planning Inc.
- TechnoHouse INC.
- Technology Joint Corporation
- TECHNONET CO., LTD.
- Tektronix Japan, Ltd.
- Texas Instruments Japan Limited
- Timelord ltd.
- TOA Corporation
- TOKYO KO-ON DENPA CO., LTD.
- Tomoca Electronics Company Limited
- TOSHIBA CORPORATION
- TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
- TOTSU INTERNATIONAL CO., LTD.
- Totsu Sangyo Co., Ltd
- Touch-Q
- TOYO Corporation
- TOYO Corporation
- Toyo Densan Co., Ltd.
- TrafficSim Co., Ltd.
- TRITECH Incorporated
- Tsubata Engineering Co., Ltd.
- U-LINK CO., LTD
