- Stedman Pharmaceuticals Pvt Ltd
- Steel Plant Engg Service
- Steel Tech India
- Steeltech Industries
- STEELZONE
- Sterikem India Private Limited
- STERLABS FORMULATION
- Sterling enterprises Chennai
- Sterling Shipping Swevices Pvt Ltd
- Sterling Solid Tyres Pvt Ltd
- Sterling Wilson Power Gen
- Stone India Limited.
- Stores Of Integral Coach Factory, Chennai
- Structural Preservation Engineers & Consultant
- STUSER TOOLS PVT.LTD.
- Suba Cottage Industries
- Subash Kumaravel
- Subasri Tex
- Subhiksha Housing
- SUBRAMANIOM SHIPPING & TRADING CO
- Success Fix Facility Integrated Services
- Success Shipping Services.
- suchi clean
- Sudtrac Linkages Pvt.ltd.
- Suganj Eco Chemicals Private Limited
- Sulochana Cotton Spinning Mills Pvt Ltd
- Sumanth And Co
- Sumi Shipping Private Limited
- Sumitomo Corporation india pvt.ltd
- Sun Facility Services
- Sun marine services
- Sun Ocean Sshipping Services
- Sun Shipping Logistics
- Sun Tyre & Wheel Systems
- SUNBEAM LOGISTICS PVT LTD
- Sundaram Brake Linings Ltd.
- sundaram honda
- Sundaram Industries
- Sundaram-Clayton Limited
- SUNDRAM FASTENERS LIMITED
- Sundram Fasteners Ltd
- Sungov Engineering Private Limited
- Sunkalp Interiors Private Limited
- Sunshine Chemicals,Channai
- Sunshine Traders
- Suntara Cosmetics Pvt Ltd
- Super shipping services
- Supreme Homes
- Supreme Industrial Co.
- SUPREME PETRO CHEMICALS
- Supreme Solders
- SURABHI INDUSTRIES
- Surana Industries Ltd
- Surana Power Ltd
- Suresh Enterprises
- Surface Protection Technologies Pvt Ltd
- Suriya Homes
- Surya Research Industry
- Suryadev Alloys & Power Private Limited
- Susira
- Suswara Lakshmi Engineering Services
- Suther Land Global
- Suwins India Private Limited
- SV Modern Engineering
- SVN ENTERPRESE
- Svs Oil Mills
- SWAJAS AIR CHARTERS LTD
- SWANAG CONSTRUCTIONS PVT LTD
- Swaraj Engineers
- Swaraj Equipment Pvt. Ltd
- Swarna Shree Builders
- Swastik Enterprises
- SWIFT TECH ENGINEERS (INDIA) PVT. LTD.
- syndicate Shipping Shipping Services (P) Ltd.
- Synergy Maritime Pvt. Ltd
- Synergy Oceanic Services India Pvt Ltd .
- SYNTHETIC POLYMERS
- Syspro Automation
- T R Enterprises
- T.V.S. Madras Auto Service
- T5 INTERNATIONAL
- Tafe Access Ltd.
- Tafe Reach Ltd
- Tag Corporation
- Tagros Chemicals India Private Ltd
- Taiyebi Tools & Fastners.
- Takraf India Pvt Ltd
- Tamil Nadu Cements Corpn. Ltd.
- TAMIL NADU GENERATION AND DISTRIBUTION CORPORATION LIMITED
- Tamil Nadu Minerals Ltd
- Tamilnadu Co-operative Milk Producers Federation Ltd
- Tamilnadu Edible Oils Pvt Ltd
- Tamilnadu Engineering Corp.
- TAMILNADU EX-SERVICEMENSCORPO
- Tamilnadu Petroproducts Ltd
- TCI Chemicals India Pvt Ltd
- TCI SEAWAYS
- TEBMA SHIPYARDS LTD.
- TECH ENVIRO
- Tech Sharp Enviro Systems Private Limited