- Si Enterprises , Mumbai
- SI Group-India Private Limited
- Siba ADS & Communications
- SIBAN HOLDINGS PVT LTD
- Sibram Pharmaceuticals
- Sicgil Industrial Gases
- SICGIL INDUSTRIAL GASES LIMITED
- Sicuro Ventures Private Limited
- SIDCO INDUSTRIAL ESTATE
- SIDDHA AGRICO
- Siddhalaxmi Engg Inds Pvt Ltd
- Siddhant Special Steel
- SIDDHARTH ELECTRICALS
- Siddharth Engineers
- Siddharth Enterprises
- Siddharth Formulations
- Siddharth Group
- Siddharth Model Sports Private Limited
- Siddharth Trading Co
- Siddhi Enterprise
- Siddhi Enterprises
- SIDDHI INKS SOLUTIONS
- Siddhi Laxmi Arts
- SIDDHI PHARMA
- Siddhi Vinayak Agarbatti Works
- Siddhi Vinayak Enterprises
- Siddhi Vinayak Pharma
- SIDDHI VINAYAK TRADING COMP
- Siddhidhata hospitality Private Limited
- Siddhivinayak Chemicals
- Siddhivinayak Energy Supplies Pvt. Ltd
- Siddhivinayak Enterprises
- Siddhivinayak International Associates
- Siddhivinayak Tradelink
- Siddhivinayk Transport Service
- Sidhaant Life Sciences Pvt. Ltd.
- SIDHANTA SOLUTIONS INDIA PRIVATE LIMITED
- Sidharth Enterprise
- Sidharth Plasts
- Sidheshwar Enterprises
- Sidhi Enterprises
- Sidhi Vinyak Service Centre
- SIDRA ENTERPRISE
- SIEG Work
- Siemens Limited
- Siemens Ltd
- SIFCO CONTAINER LINE (MUMBAI)PVT.LTD.
- Sigachi Industries Limited
- SIGANPORIA BROS
- Sigma
- Sigma C Process Engineering
- Sigma Engineering
- Sigma Enterprise
- SIGMA INC
- Sigma Marine and Offshore Supplies
- SIGMA SALES
- SIGMA SEALS (I) LLP
- Sigma Tools & Accessories Pvt Ltd
- Sigma Trading Co Ltd
- SIGMA WATERPROOFING & CONSTRUCTION CHEMICALS
- Sigmaflex Engineering Pvt.Ltd
- Sigmarq Technologies Private Limited
- SIGN PHARMA TRADE SERVICES PVT LTD
- Signext Display Systems Pvt Ltd
- Signode India Limited
- SIHAULI CHEMICALS PVT LTD
- Sika Interplant Systems Limited
- SIL Jewels
- Sil Retail Pvt Ltd
- Silaris Ingredients LLP
- Silica Infotech Private Limited
- SILICON PAINTS & CHEMICALS CO
- Silika Industry
- SILKROAD INTERNATIONAL
- Silver Global Services Pvt. Ltd.
- SILVER MARINE TRADERS
- Silver Point Press
- Silver Seas Trading Pvt Ltd
- Silver Techno Mech Pvt Ltd
- Silver Tubes
- Silverpoint Press Pvt Ltd
- Sima Marine India Pvt Ltd
- Simanjay Enterprises
- Simaran Teen Pvt Ltd
- Simatech (Sima Marine (I) Pvt. Ltd
- Simon Steel India
- Simple Sourcing
- Simplex Realty Limited
- Simplified Chemical Traders
- Simply Clean
- Simportex Ltd.
- SIMRAN TECHNOLOGIES
- SIMSON CHEMIE
- Simson Pharma Limited
- Simvel Enterprises
- Sinai Maritime Services Pvt. Ltd. / Royal Continental Services
- Sinapathy Whiteleg Pvt Ltd
- Sinasta Maritime
- Sinaxis Enterprises
- Sinaxis Enterprises Pvt. Ltd.
