| Name | Country | Market Cap (US$) |
|---|
| BRITISH GYPSUM - ISOVER LTD | United Kingdom | Private |
| British Gypsum Ltd | United Kingdom | Private |
| British Precast Concrete Federation Ltd. | United Kingdom | Private |
| BRITISH STEAM SPECIALTIES LTD $THE! | United Kingdom | Private |
| Brock White Company, Llc | United States | Private |
| Brock-McVey Company | United States | Private |
| Brödrene Böckmann AS | Norway | Private |
| Brodrene Dahl A/S | Denmark | Private |
| Brodrene Dahl A/S | Norway | Private |
| Brooks Group | Republic of Ireland | Private |
| Brooks Products Inc. | United States | Private |
| Broson AB | Sweden | Private |
| Brossette | France | Private |
| Brossette B.T.I. S.A. | France | Private |
| Browder & Son Veneer Company, Inc. | United States | Private |
| Browder Veneer Company, Inc. | United States | Private |
| Browder Veneer Works, Inc. | United States | Private |
| Brown Jordan Company | United States | Private |
| Brown Moulding Company, Inc. | United States | Private |
| Brown-Graves Lumber Company | United States | Private |
| Broyhill Furniture Industries | United States | Private |
| Bruce Hardwood Floors | United States | Private |
| Bruce Supply Corp | United States | Private |
| Brüggen Oberflächen- und Systemlieferant GmbH | Germany | Private |
| Brühler Stahlhandel GmbH | Germany | Private |
| Bruning Tecnometal S/A. | Brazil | Private |
| Brüninghaus & Drissner GmbH | Germany | Private |
| Brush Electrical Machines Ltd. | United Kingdom | Private |
| Bryce Corporation | United States | Private |
| Brytex Building Systems Inc. | Canada | Private |
| Bsc, K.K. | Japan | Private |
| BSL Landmaschinenfabrik Laer Gesellschaft mit beschränkter Haftu | Germany | Private |
| BSN GLASSPACK GmbH & Co. KG | Germany | Private |
| BSV DI PIZZINATO ARMANDO & C SNC | Italy | Private |
| BTP Distribution | France | Private |
| Bubendorff S.A. | France | Private |
| Buchanan Hardwoods, Inc. | United States | Private |
| Buckeye Ready-Mix, Llc | United States | Private |
| Budapesti TÜZeP Vallalat | Hungary | Private |
| Buderus Austria Heiztechnik Gesellschaft m.b.H. | Austria | Private |
| BUDERUS CHAUFFAGE | France | Private |
| BUDERUS ITALIA SRL | Italy | Private |
| BUDERUS TECHNIKA GRZEWCZA SP Z O O | Poland | Private |
| BUDINDUSTRY BAKHCHISARAY INTERGRATED PLANT CLOSED JOINT STOCK CO | Ukraine | Private |
| Budokrusz SP Z O O | Poland | Private |
| Bufab Sweden AB | Sweden | Private |
| Buffalo Crushed Stone Inc | United States | Private |
| Buffalo Crushed Stone Inc. | United States | Private |
| Buffelen Woodworking Company | United States | Private |
| Bug-Alu Technic GmbH | Austria | Private |
| Buhler, John Inc | Canada | Private |
| BUILDCON CONCRETE SDN BHD | Malaysia | Private |
| Builder Marts of America Inc. | United States | Private |
| Builders Concrete & Supply Co Inc | United States | Private |
| Builders FirstSource-Southeast Group, Inc. | United States | Private |
| Builders Square Inc. | United States | Private |
| Building Automation Products, Inc. | United States | Private |
| BUILDING INTERNATIONAL FRANCE | France | Private |
| Building Materials Corporation of America | United States | Private |
| BUJVAR CONSTRUCCIONES S.A. | Spain | Private |
| Bull Moose Tube Company | United States | Private |
| Bun Kee (International) Limited | Hong Kong | Private |
| Bunnings Building Supplies Ltd. | Australia | Private |
| BURGE & GUNSON LTD | United Kingdom | Private |
| Burger Iron Company | United States | Private |
| Burgess-Norton Mfg Co Inc | United States | Private |
| Burgman Heybroek NV | Netherlands | Private |
| Burke Engineering Co | United States | Private |
| Burle Industries, Inc. | United States | Private |
| Burlingame Industries, Incorporated | United States | Private |
| BURN STANDARD COMPANY LIMITED | India | Private |
| BURNCO Rock Products Ltd | Canada | Private |
| Burndene Investments plc | United Kingdom | Private |
| BurnsCascade | United States | Private |
| Bürstner GmbH | Germany | Private |
| Burton GmbH + Co. KG | Germany | Private |
| Burton Lumber & Hardware Company | United States | Private |
| Burwood Products Company | United States | Private |
| Busatis GmbH | Austria | Private |
| Bush Supply Company | United States | Private |
| Buss AG | Switzerland | Private |
| Butler (Tianjin) Inc. | China | Private |
| Butler International Company | Saudi Arabia | Private |
| Butler Manufacturing Company | United States | Private |
| Butzbach GmbH Industrietore | Germany | Private |
| BVS-Blechtechnik GmbH | Germany | Private |
| BWG Betonwerk Georgsmarienhütte GmbH & Co. KG | Germany | Private |
| bwh Hochbau AG | Germany | Private |
| Byrne Brothers (Formwork) Limited | United Kingdom | Private |
| C & M BRICK PTY LTD | Australia | Private |
| C & M Stahl Service GmbH & Co. KG | Germany | Private |
| C A P Aluminium Systems Ltd | United Kingdom | Private |
| C C Distributors, Inc | United States | Private |
| C D S Technologies Inc | United States | Private |
| C G R SAINT YORRE | France | Private |
| C Lundqvist Trading AB | Sweden | Private |
| C X T Incorporated | United States | Private |
| C&L Supply Company | United States | Private |
| C-S FRANCE | France | Private |
| C. & G. CONCRETE LTD | United Kingdom | Private |
|
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