| Name | Country | Market Cap (US$) |
|---|
| Blake Equipment Company Inc | United States | Private |
| Blakeslee Prestress Inc | United States | Private |
| Blanco GmbH + Co. KG | Germany | Private |
| Blaney Hardwoods of Ohio, Inc. | United States | Private |
| BLANK & SEEGERS KG Thüringer Fachgroßhandel für Haustechnik | Germany | Private |
| BLB - INDUSTRIAS METALURGICAS, S.A. | Portugal | Private |
| Blefa GmbH | Germany | Private |
| Bleiberger Bergwerks-Union AG (BBU) | Austria | Private |
| BLG Betonlieferungsges. mbH | Germany | Private |
| BLOC ET JOB | France | Private |
| Blockleys plc | United Kingdom | Private |
| BLOCOTELHA - COBERTURAS METALICAS AUTOPORTANTES, LDA | Portugal | Private |
| BLOXWICH FABRICATIONS LTD | United Kingdom | Private |
| BLP Group plc | United Kingdom | Private |
| Blue Circle America Inc. | United States | Private |
| BLUE CIRCLE INDUSTRIES PLC | United Kingdom | Private |
| BLUE CIRCLE SOUTHERN CEMENT LTD | Australia | Private |
| Blue Circle Southern Cement Ltd. | Australia | Private |
| BMB Buildbase | United Kingdom | Private |
| Bmc Enterprises, Inc | United States | Private |
| BMCE | France | Private |
| BMRA | France | Private |
| BMSO | France | Private |
| Bmss plc | United Kingdom | Private |
| BMT N.V. | Belgium | Private |
| BMTI-Baumaschinentechnik International GmbH | Austria | Private |
| Bodon Industries, Inc. | United States | Private |
| Boerner + Co. | Germany | Private |
| Bohn & Dawson Inc | United States | Private |
| Bois d'ingenierie Abitibi-LP II Inc | Canada | Private |
| Boise Cascade, LLC | United States | Private |
| Boland Trane Services, Inc. | United States | Private |
| Boliden à Cuivre et à Zinc de Liege | Belgium | Private |
| Boman & Kemp Manufacturing Inc. | United States | Private |
| BOMFORD TURNER LTD | United Kingdom | Private |
| BONIFAY SA | France | Private |
| Bonna Sabla S.A. | France | Private |
| BONNA SABLA SNC | France | Private |
| Bonny Allied Industries Ltd | Nigeria | Private |
| Boon Edam Inc. | United States | Private |
| Boone Plumbing And Heating Supply Inc | Canada | Private |
| Boral Australian Gypsum Ltd. | Australia | Private |
| BORAL BRICKS (NSW) PTY LTD | Australia | Private |
| BORAL BRICKS PTY LTD | Australia | Private |
| Boral Bricks Pty. Ltd. | Australia | Private |
| BORAL CONCRETE PRODUCTS PTY LTD | Australia | Private |
| BORAL HOLLOSTONE MASONRY (SOUTH AUST.) PTY. LIMITED | Australia | Private |
| Boral Industries Inc | United States | Private |
| Boral Industries Inc. | United States | Private |
| BORAL MASONRY LTD | Australia | Private |
| BORAL MONTORO PTY LIMITED | Australia | Private |
| BORAL RESOURCES (COUNTRY) PTY. LIMITED | Australia | Private |
| BORAL RESOURCES (NSW) PTY LTD | Australia | Private |
| BORAL RESOURCES (SA) LIMITED | Australia | Private |
| BORAL WINDOW SYSTEMS LTD | Australia | Private |
| BOREA DUE SPA | Italy | Private |
| BOREA SPA | Italy | Private |
| Borroughs Corporation | United States | Private |
| BORTUBO, S.A. | Spain | Private |
| Bosch Pamplona S.A. | Spain | Private |
| Bosma Melktechniek St. Nic. | Netherlands | Private |
| Boston Retail Products Inc | United States | Private |
| Botament-Systembaustoffe GmbH & Co. KG | Germany | Private |
| BOULARD VERDIER SA | France | Private |
| Boulton & Paul Ltd. | United Kingdom | Private |
| Boumatic Gascoigne Melotte SPRL | Belgium | Private |
| Bouras Industries Inc. | United States | Private |
| Bourgault Industries Ltd | Canada | Private |
| BOURNE STEEL LTD | United Kingdom | Private |
| Bouwcenter Holding B.V. | Netherlands | Private |
| Bouwmaterialen Van Pelt NV | Belgium | Private |
| BOUYER LEROUX | France | Private |
| Bowater Mersey Paper Company Ltd. | Canada | Private |
| Bowman Distribution Company | United States | Private |
| Boyce, Graybeal & Sayre, Inc | United States | Private |
| Boyenval Van Peer | France | Private |
| BPA NOrge AS | Norway | Private |
| Bpb America Inc. | United States | Private |
| BPB Belgium NV | Belgium | Private |
| BPB Canada Inc | Canada | Private |
| BPB France S.A. | France | Private |
| Bpb Gypsum Inc | United States | Private |
| Bpb Gypsum, Inc | United States | Private |
| Bpb Iberplaco, S.A. | Spain | Private |
| BPB India Gypsum Ltd | India | Private |
| BPB Limited | United Kingdom | Private |
| BPB Nederland B.V. | Netherlands | Private |
| BPB Placo S.A. | France | Private |
| Braas Dachsysteme GmbH | Germany | Private |
| Braas Flachdachsysteme GmbH | Germany | Private |
| Braas Italia S.p.A. | Italy | Private |
| Bracco Distributing Co. Inc. | United States | Private |
| Brachot-Hermant NV | Belgium | Private |
| Bradco International Ltd. | United States | Private |
| Bradco Supply Corporation | United States | Private |
| Braden Manufacturing, Llc | United States | Private |
| Bradley Corporation | United States | Private |
| Bradley Fixtures Corp | United States | Private |
| Brafer Construçoes Metálicas S/A. | Brazil | Private |
| BRAMAC - stresne systemy, spol. s r.o. | Slovakia | Private |
|
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