I think international companies ain't looking at World Bank Ranking.
Here are few name of the International companies which already invested in India.
Accenture Pvt Ltd, Alcoa Asia Limited, Barry-Wehmiller International Resources, BPL Mobile, FMC Asia Pacific Inc, Gaz de France India Liaison Office, Godrej Agrovet, Syratron Marketing, Teleglobe America International Inc, Tetra Pak India Pvt Ltd, UCB India Pvt Ltd, UDV India Ltd, Vadilal Group, Van Oord India Pvt Ltd, Veolia Water India Pvt Ltd Aarkay Group Pvt Ltd, Aarti Drugs Ltd, ABB India Ltd Abbott India Ltd, ABN AMRO Bank (India) Ltd, ABS India Pvt Ltd, Accenture Pvt Ltd, Accor Services India, Sage Software India Pvt. Ltd, Acer India (Pvt) Ltd, ACL Wireless Ltd, AC Nielsen, Actavis Pharma Development Centre Pvt Ltd, Actis Advisers Pvt Ltd, Activair & Sea Airfreight India Private Limited, Aditya Birla Group of Companies, Adobe Systems India Pvt Ltd, Ador Fontech Ltd, Adore Infotech Pvt Ltd, ADP Private Limited, Aegis Logistics Ltd, Aeroflot-Russian Airlines, Agilent Technologies India Pvt Ltd, Air India Ltd, Air Liquide Engineering India Pvt Ltd, Aisin NTTF Private Limited, AK Engineering Company, Alcatel Business Systems India Limited, Alembic Ltd, Alfa Laval (India) Ltd, Allergan India Limited, Allied Lemuir Pvt Ltd, ALTANA Pharma Pvt Ltd, American Express Bank India, American Quality Assessors India Pvt Ltd, Anfilco Limited, Annapurna Mechatronics Pte Ltd, Aon Global Insurance Services Private Limited, Avestha Gengraine Technologies Pvt Ltd AVI-OIL India Pvt Ltd Avis Mercury Car Rental Ltd Avnet India Pvt Ltd Aztec Soft Ltd B Braun Medical (India) Pvt Ltd BAeHAL Software Ltd (BAeHAL) Bajaj Allianz Life Insurance Company Ltd, Bajaj Auto Ltd, Baker Hughes Inteq, Bal Pharma Ltd, Intesa Sanpaolo, Bank of America, Bank of Baroda, Bank of New York, Barracuda Camouflage (P) Ltd, Bauer Equipment India (P) Ltd Bausch & Lomb Eyecare (India) Pvt Ltd, Bayer CropScience Ltd, Becton Dickinson, Bell Helicopter Textron India, Benninger India Ltd, Bentley New Delhi, Best Western De Emerald, Bharat Electronic Ltd (BEL), Bharat Heavy Electricals Ltd (BHEL), Bharat Petroleum Corporation Ltd (BPCL), Bharat Shell Ltd, Bharti Tele-Ventures Limited, Biocon Ltd, bioMerieux India Pvt Ltd, Biotron Healthcare (India) Pvt Ltd, Birla Ericsson Optical Limited (BE), Birla Sun Life Insurance Company Limited, Black & Veatch India Private Ltd, BNP Paribas, Bobst India Private Ltd, BOC Edwards Ltd, Boehringer Ingelheim India Pvt Ltd, Boyden, BP India Services Pvt Ltd, Brigade Corporation India Pvt Ltd, British Gas India Private Limited, Brother International India Ltd, BS&B Safety Systems (India), CA Computer Associates India Pvt Ltd, Cable & Wireless India, Cabot India Limited, Cadila Pharmaceuticals Ltd, Caleb Brett India Pvt Ltd, Chemtex Engineering of India Ltd, Choksi Laboratories Ltd, Cholamandalam Investment & Finance Company Limited, Cipla Ltd, Cisco Systems (India) Pvt Ltd, Citadel Health, Citi Group, Clariant (India) Ltd, Clariant (India) Ltd, Claris Lifesciences Ltd, CLSA India Pvt Ltd, Colgate-Palmolive (India) Limited, Colorcon Asia Pvt Limited, Commerzbank Mumbai, Connaught Plaza Restaurants Pvt Ltd, Contract Advertising (India) Ltd, Convergent Communications (India) Pvt Ltd, Cordys India Pvt Ltd, Covansys (India) Pvt Limited, Cranes Software International Limited, Creative Engineers (Chennai), Crown Worldwide Movers Pvt Ltd, Cummins India Limited, Cushman & Wakefield (India) Pvt Ltd, D-Link India Limited, DA Stuart Company, Daewoo International Corporation, DaimlerChrysler India Private Limited, DCM Shriram Consolidated Ltd (DSCL), DE Shaw India Software Private Limited, Delphi Automotive Systems Ltd, Delux Bearings Ltd, Denso Haryana Pvt Ltd, Denso Sales India Pvt Ltd, Det Norske Veritas, DHI (India) Water & Environment Pvt Ltd, DIC India Ltd, Digicont, Dishman Pharmaceuticals Limited, DKSH India Pvt Ltd, DKT India, Dodsal Private Limited, Dow Chemical International Pvt Ltd, Dow Corning India Private Ltd, Dow Jones Newswires, DSP Merrill Lynch Ltd, Dua Associates, Dun & Bradstreet Information Services India Pvt Ltd, DZ Bank, India Representative Office, Elcome Technologies Pvt Ltd, Electrolux Kelvinator, Electronic Data Systems (India) Pvt Ltd, Flowserve Sanmar Ltd, Fluor Daniel India Private Limited, Fuji Photo Film Co Ltd, Fujitsu India Ltd (FIL), Fulford (India) Ltd, Galderma India Pvt Ltd, Gateway Group, GC Chemie Pharmie Group, General Motors India Pvt Ltd, Gharpure Consulting Engineers Pvt Ltd, Givaudan (India) Private Ltd, GlaxoSmithKline Pharmaceuticals Ltd, Global Calcium Pvt Ltd, Aon Global Insurance Services Pvt Ltd, Godfrey Phillips India Ltd, Grand InterContinental New Delhi, Granules India Ltd, Grindwell Norton Ltd (Saint Gobain), Group 4 Securicor India (P) Ltd, Gujarat Alkalies & Chemicals Limited, CLP Power Private Ltd, Gulf Oil Corporation Ltd, Gurudayal Gangabux Private Limited, Habasit Iakoka Pvt Ltd, Halcrow Group Ltd, Haldex India Ltd, Haldia Petrochemicals Ltd, Haldor Topsoe International A/S, Havell, HCL Infosystems Limited, HDFC General Insurance Company Limited, HDFC Standard Life Insurance Company Ltd, Headstrong Service India Ptv Ltd, Heidrick & Struggles, Helm India Pvt Ltd, Hempel India, Henkel Chembond Surface Technologies Ltd, Henkel Loctite India Pvt Ltd, Henry Butcher India Ltd, Hero Honda Motors Limited, Huawei Technologies India Pvt Ltd, Huber Chemicals India Pvt Ltd, Hunter Douglas India Pvt Ltd, Hutchison Essar Limited, Hyatt Regency Delhi, IBM India Ltd, ICI India Limited, IMV India Pvt Ltd, Indian Airlines, Infokall Enterprise Solutions Pvt Ltd, Ingram Micro India Private Limited, Intel Asia Electronics Inc (Mumbai), Intelligroup Asia Private Limited, Intercontinental Development Pvt Ltd, Intergraph Consulting Pvt Ltd, International Flavours & Fragrances (India) Private Limited, Interra Software India Pvt Ltd, Intervet India Pvt Ltd, IOL Chemicals and Pharmaceuticals Ltd (IOLCP), Itochu Corporation Ltd, ITW India Limited, JK Ansell Ltd (JKAL), JM Baxi & Company, John Fowler (India) Pvt Ltd, Johnson & Johnson Ltd, Jones Lang LaSalle Meghraj, Jones Lang LaSalle Meghraj, JT International (India) Private Limited, Kadakia Plastics & Chemicals Pvt Ltd, KE - Burgmann Flexibles India Pvt Ltd, KE - Burgmann Flexibles India Pvt Ltd, KE-Burgmann Flexible India Pte Ltd, Keane India Ltd, KEC International, Kinetic Engineering Limited, Knight Frank (India) Pvt Ltd, Knight Frank (India) Pvt Ltd, Kohli Industries, Komatsu India Pte Ltd, Korn & Ferry International Pte Ltd, Korn & Ferry International, Kotak Mahindra Old Mutual Life Insurance, Kuehne-Nagel Pvt Ltd, Man Ferrostaal AG, Liaison Office, Mangalore Refinery & Petrochemicals Ltd (MRPL), Margin Free (Consumer Protection & Guidance Society), Marico Industries Limited, Sheraton Welcome Hotel, Marubeni India Private Ltd, Maruti Udyog Limited (MUL), Deloitte Cosulting Ptv Ltd, Matrix Laboratories Ltd, Max India ltd, McCann-Erickson India, Medreich Ltd, Metso Minerals (Mumbai) Pvt Ltd, Microsoft Corporation (India) Pvt Ltd, Migatronic India Pvt Ltd, Millipore India Pvt Ltd, Mistral Solutions Pvt Ltd, Mitsubishi Corporation India Private Ltd, Mitsui & Co Ltd, Mizuho Corporation, Moet Hennessy India Pvt Ltd, Molex (India) Ltd, Monsanto India, Morgan Stanley Investment Management Private Limited, Motorola India Private Limited, Mulder India Pvt Ltd, Gujarat Narmada Valley Fertilizers Ltd (NCPL), Natco Pharma Ltd, National Drugs & Chemicals, National Organic Chemical Industries Limited (NOCIL-RCD), National Starch & Chemical India, National Thermal Power Corp (NTPC), Natural Remedies Pvt Ltd, NEC Corporation, Vestas Wind Technology Private Ltd, Neon Laboratories Ltd, Nestle India, Neuland Laboratories Ltd, Nike India Liason Office, NN Combined Engineering Agencies Pvt Ltd, Noida Power Company Ltd (NPCL), Nortel India, North Delhi Power Ltd (NDPL), Northern Operating Services Pvt Ltd, Panacea Biotec Ltd, Parry Nutraceuticals Ltd, Patel Engineering Limited, Patni Computers Ltd, Penguin Books India Pvt Ltd, Perfect Circle India Limited, Petrofac Engineering India Private Limited, Petronet LNG Limited, Pfizer Ltd, Philips India Limited, Pidilite Industries Limited, Pilkington Glass India Private Ltd, Plethico Pharmaceuticals Ltd, PLT Industries Pvt Ltd, Polaris Software LAB Limited, Power Grid Corporation of India Ltd, Pragati Offset Pvt Ltd, PRAJ Industries Limited, Praxair India Pvt Limited, Pride Foramer, Principal PNB Asset Management Company Private Limited, Procter & Gamble Hygiene and Health Care Ltd, PTC India Ltd, Punj Lloyd Ltd, Punjab Chemicals & Pharmaceuticals Ltd, Purolator India Limited, QualCore Logic Ltd, RAD India, CC Carbon Pte Ltd, Rajpurohit Group of Enterprises, Rane TRW Steering Systems Ltd, Reckitt & Colman of India Ltd, Reifenhauser India Marketing Limited, Reliance Energy Ltd, Reliance Industries Limited, Reliance Infocomm Ltd, RK Swamy BBDO, Roche Diagnostics India (Pvt) Ltd, Roche Scientific Company (India) Pvt Ltd, SAP India Private Ltd, SAS Institute India Pvt Ltd, Sasken Communication Technologies Ltd, Satelec (India) Pvt Ltd, Satyam Computer Services Ltd, Saurashtra Specialities Pvt Ltd, Oerlikon Textile India Pvt Ltd, Schenectady Herdillia Limited, Schenker India, Schindler India Pvt Ltd, Schlumberger Asia Service Ltd, Schurter Electronics (India) Pvt Ltd, Scott Wilson, Seco Tools India (P) Ltd, Secure Meters Limited, Sensient India Private Ltd, Serdia Pharmaceuticals (India) Pvt Ltd, SGS India Pvt Ltd, Shasun Chemicals & Drugs Ltd, SHV Energy Pvt Ltd, Sibrama Newage, Sidel India Pvt Ltd, Siemens Ltd, Sillicon Graphic Systems India Ltd, SKF India Ltd, SKM Tools Pvt Ltd, Sodexho Pass India Ltd, Sojitz India Pvt Ltd, Solvay Pharma India Ltd, Somfy India Pvt Ltd, Sonata Software Ltd, Sonic Biochem Extractions Ltd, Sony India Ltd, South Asia LPG Co Pvt Ltd, Southern Petrochemical Industries Corporation (SPIC), SPM Instrument India Pvt Ltd, Standard Chartered Bank, Stiefel India Private Ltd, Suhner India Pvt Ltd, Sun Microsystems India Pvt Ltd, Supreme Combine, Suyog Diagnostics Pvt Ltd, Swagelok - Bombay Fluid System Components Pvt. Ltd, Swiss Re Services India Pvt Ltd, Synmedic Laboratories, Tata AIG General Insurance Company Ltd, Tata BP Solar India Limited, Tata BP Solar India Limited, Tata BP Solar India Limited, Tata Group of Companies, Tata Motors Limited, Unichem Laboratories Ltd, UniCredito Italiano SPA, Uniflex Cables Ltd, Unique Instruments & Manufacturers (UIM) Pvt Ltd, United Phosphorus Limited, Universal Music (India) Pvt Ltd, Universal Music (India) Pvt Ltd, University of Petroleum & Energy Studies, UPS Jetair Express Pvt Ltd, UTStarcom Inc - South Asia Regional Office, VA TECH HYDRO India Pvt Ltd, VA TECH India Pvt Ltd, Valeo Friction Materials India Ltd, Venus Remedies Ltd, Versatile Card Technology (P) Ltd, Blue Ally, Wanbury Ltd and Whirlpool India Ltd