- KISHORILAL SHYAMSUNDER
- Kiswok Industries Pvt Ltd
- KKB Enterprises
- KKB Enterprises
- KKB Enterprises
- KKB Enterprises
- Kleve World Private Limited
- KLYDE ENGINEERING AND WORKS
- KMEW OFFSHORE PVT LTD
- KOH-I-NOOR
- Kolkata Municipal Corporation
- Kolkata Port Trust
- Kolkata West International City Pvt. Ltd.
- Kolmak Chemicals Ltd
- KOOVE IOT PVT. LTD
- Koppern Maco Services Pvt Ltd
- Kothari Processors
- Kripal industries
- Krishna Das
- Krishna Edible Oil Mills
- KRISHNA ENGINEERS AND CONSULTANTS
- KRISHNA TISSUES PVT. LTD.
- Kritika Wires
- Ksk Mahanadi Power Company Limited
- Kuber Steel
- Kumar Aeromatics
- KUNDU BROTHERS AND CO
- LAB CHEM CORPORATION
- Lab Instruments and Chemicals
- LAB-IN-CO
- LABANAYA INDUSTRIES
- LABARD INSTRUCHEM PVT LTD
- LABARD MEDITECH
- LAHLIWALA STEELS PVT LTD
- Lahoma Industries
- LAKSHMAN ISPAT PRIVATE LIMITED
- Lal Baba Seamless Tubes Pvt. Ltd
- Lalbaba Engineering Limited
- Lalla Agency
- Larkspur Products
- Larsen and Toubro Limited (Kolkata)
- Last Mile Pyramid Solution LLP
- Laxmi Motors.
- LAXMI NARAYAN SANDEEP KUMAR
- Laxmi Trading Co
- Leaders Healthcare Ltd
- Lee Marine Services - HALDIA
- Lexportex (India) Pvt. Ltd
- Liberty Marine Syndicate(Kol)
- Lichens Environment pvt Ltd,
- Lift O Marine
- LIFT-O-MARINE
- Linde India Ltd
- Link Enterprises
- Live Of Life Marketing System Private Limited
- Lloyds Properties Pvt Ltd
- LMJ INTERNATIONAL LTD
- Logus labortries Pvt Ltd
- Lohia Traders
- Lokenath Engineering Co., Kolkata
- Lokenath paper plate
- LOKNATH ENTERPRISE
- Loknath Enterprises
- LOKNATH ENTERPRISES haldia
- Londree.com
- LORDS VANIJYA PVT. LTD
- LUCKY ENTERPRISE
- LUMBINI BEVERAGES PVT LTD
- Lumino Industries
- Luxmi Medichem Pvt Ltd
- Luxminarayan Engineering Works
- M s Sunshine Power Products Pvt. Ltd
- M B ISPAT CORPORATION LIMITED
- M C Enterprise
- M Dhara & Brothers
- M H SHIPPING SERVICE
- M K S H Sales Group
- M M Industrial Corporation
- M P Industries
- M R Steels
- M s Agni Power and Electronics Pvt. Ltd
- M s Ashis Wheels Ltd
- M s Binay OPTO Electronics Pvt. Ltd
- M s Bose Power Limited
- M s Debtronics
- M s DIDAS INTERNATIONAL
- M s Durga Solar Enterprise
- M s Environ Energy Tech Service Ltd
- M s Exide Industries Limited
- M s Geetanjali Solar Enterprise
- M s Inka Systems & Services
- M s Marc Signage
- M s Paulsons & Company
- M s Power One Micro Systems Pvt Ltd
- M s Racily Udyog
- M s Rajasthan Electronics Industries Limited
- M s Rashmi Industries
- M s Reliance Industries Ltd
- M s Sigma Steel & Engineers Pvt. Ltd
- M s Solace