| | Internet | New York | NY | $100 - 250M |
| BitlyBitly | URL Shortener and Link Management Platform | Internet | New York | NY | $10 - 50M |
| | Marketing and Advertising | Dallas | TX | $0 - 1M |
| | Banking | Toronto | ON | > $1B |
| | Writing and Editing | New York | NY | $1 - 10M |
| | Hospitality | | | $100 - 250M |
| BambooHRHR Software for Small & Medium Businesses | BambooHR | Human Resources | Lindon | UT | $10 - 50M |
| | Computer Software | Mountain View | CA | $100 - 250M |
| BazaarvoiceBazaarvoice | User-generated content marketing solutions | Internet | | | $100 - 250M |
| | Consumer Electronics | Los Angeles | CA | $500M - 1B |
| | Government Administration | Bronson | FL | $1 - 10M |
| Buy DomainsBuy Domain Names- Find a Premium Domain & Open Your Doors, BuyDomains.com | Information Technology and Services | Waltham | MA | $1 - 10M |
| BlurbCreate and self-publish books, magazines & ebooks | Blurb | Internet | San Francisco | CA | $10 - 50M |
| BrainsharkSales Enablement & Readiness Software | Brainshark | Computer Software | Waltham | MA | $100 - 250M |
| | Computer & Network Security | Sunnyvale | CA | $250 - 500M |
| | Computer Networking | San Jose | CA | > $1B |
| | Retail | Concord | CA | > $1B |
| BilltrustBilltrust | The Leader in Automated PCM Solutions | Financial Services | Hamilton Township | NJ | $50 - 100M |
| | Information Technology and Services | Campbell | CA | $250 - 500M |
| BeanstreamAccept Online, In-Store, and In-App Payments | Beanstream, a Bambora Company | Information Technology and Services | Victoria | BC | $250 - 500M |
| | Biotechnology | Hercules | CA | > $1B |
| | Aviation & Aerospace | Montreal | QC | > $1B |
| | Higher Education | Downers Grove | IL | $100 - 250M |
| BNY MellonBNY Mellon | The Investments Company for the World | Financial Services | New York | NY | > $1B |
| Big Nerd RanchBig Nerd Ranch: Mobile App Development, Training and Programming Guides | Information Technology and Services | | | $1 - 10M |
| Baker CollegeBaker College - Undergraduate & Graduate Degrees Online & in Michigan | Higher Education | Allen Park | MI | $100 - 250M |
| | Higher Education | Waltham | MA | $100 - 250M |
| Booster LLCBooster.com - Free Crowdfunding Platform. Raise Money. Awareness. Spirits | Fund-Raising | Newton | MA | $1 - 10M |
| | Transportation/Trucking/Railroad | Berlin | Berlin | $10 - 50M |
| BotifyBotify | Website crawler & Log analyzer for SEO | Internet | | | $0 - 1M |
| | Fund-Raising | Alpharetta | GA | $1 - 10M |
| | Higher Education | Babson Park | MA | $100 - 250M |
| BIMobjectDownload free BIM content from the BIMobject Cloud | BIMobject | Information Technology and Services | Malm?? | - | $10 - 50M |
| BullhornApplicant Tracking System | CRM Software | Bullhorn | Computer Software | Boston | MA | $50 - 100M |
| | Retail | Bury | Lancs | > $1B |
| | Insurance | | | $250 - 500M |
| | Information Services | London | UK | $1 - 10M |
| BondsBuy Australia's Best Clothing & Underwear Online - BONDS | Apparel & Fashion | Melbourne | VIC | $0 - 1M |
| BizChair.comQuality Discount Furniture for Your Home and Business | BizChair.com | Internet | Canton | GA | $100 - 250M |
| | Computer Software | Ridgeland | MS | $50 - 100M |
| BlackLineThe Unified Cloud for Accounting and Finance | BlackLine | Computer Software | Los Angeles | CA | $50 - 100M |
| | | SAINT HELENA | CA | |
| | Information Technology and Services | | | $10 - 50M |
| | Marketing and Advertising | Roseville | CA | $1 - 10M |
| | Real Estate | | | $500M - 1B |
| B LabWelcome | B Corporation | Civic & Social Organization | Wayne | PA | $1 - 10M |
| | Telecommunications | Rye Brook | NY | $250 - 500M |
| BevNET.com, Inc.BevNET.com -- Beverage industry news, reviews, jobs, and events/conferences | Food & Beverages | Watertown | MA | $1 - 10M |
| | Transportation/Trucking/Railroad | | | $100 - 250M |
| BizibleBizible | B2B Marketing Attribution & Analytics Software | Internet | Seattle | WA | $0 - 1M |
| | Information Technology and Services | Montpellier | | $1 - 10M |
| | Computer Software | | | $1 - 10M |
| BellyBusiness Customer Loyalty Program | Belly | Consumer Services | Chicago | IL | $1 - 10M |
| Blu HomesBlu Homes | Modern, Green, Premium Prefab Modular Bay Area Homes | Real Estate | Waltham | MA | $500M - 1B |
| Bobcat CompanyBobcat Equipment & Attachments - Official Bobcat Company Site | Machinery | Long Beach | CA | $250 - 500M |
| Bent PixelsMCN and Digital Media Company Serving Creators, Brands, and Rights Holders | Internet | Las Vegas | NV | $0 - 1M |
| | Online Media | Chicago | IL | $0 - 1M |
| BarillianceEcommerce Personalization & Conversion Optimization | Internet | Ramat Hasharon | | $1 - 10M |
| | Automotive | Doral | Surrey | $0 - 1M |
| | Food Production | Zurich | Zurich | > $1B |
| | Mental Health Care | Redwood City | CA | $0 - 1M |
| Brigade GroupProperty Developers Bangalore, Top Builders in India - Brigade Group | Real Estate | | | $500M - 1B |
| | Security and Investigations | Flemington | NJ | $1 - 10M |
| | Information Technology and Services | Curitiba | Parana | > $1B |
| | Legal Services | Pune | | $10 - 50M |
| | Consumer Goods | | | $10 - 50M |
| | Management Consulting | San Francisco | CA | $10 - 50M |
| BioTek InstrumentsImaging systems, microplate readers, washers, dispensers and automated systems | Biotechnology | Winooski | VT | $100 - 250M |
| | Accounting | Portsmouth | NH | $100 - 250M |
| | Retail | London | London | $1 - 10M |
| | Information Technology and Services | New York | NY | |
| | Building Materials | Irvine | CA | $0 - 1M |
| | Local Business | Brooklyn | New York | $1 - 10M |
| | Information Technology and Services | New York | NY | $50 - 100M |
| BroadvoiceBroadvoice Business Phone Service - Cloud PBX, SIP Trunking | Telecommunications | Northridge | CA | $10 - 50M |
| BidNetGovernment Contracts and RFP's, exclusive Bids notification service | BidNet | Market Research | Albany | NY | $1 - 10M |
| | Professional Training & Coaching | LONDON | ENG | $10 - 50M |
| | Mechanical or Industrial Engineering | Hoffman Estates | IL | $1 - 10M |
| | Management Consulting | Noida | UP | $10 - 50M |
| Block ImagingBlock Imaging | Medical Imaging Equipment, Parts & Service | Medical Devices | Holt | MI | $10 - 50M |
| BPMInstitute.orgBPMInstitute.org | Business Process Management (BPM) Training and Education | Education Management | WESTBOROUGH | MA | $10 - 50M |
| BidtellectThe Leading Buy Side Native Platform - Bidtellect | Marketing and Advertising | Delray Beach | FL | $1 - 10M |
| | Information Services | Hackensack | NJ | $10 - 50M |
| | Staffing and Recruiting | London | London | $0 - 1M |
| | Insurance | Buffalo | NY | > $1B |
| | Consumer Electronics | Toronto | ON | $0 - 1M |
| Bloom EnergyBloom Energy - Alternative, Clean Energy Company | Oil & Energy | Sunnyvale | CA | $50 - 100M |
| Bodycote
The leading provider of heat treatment services worldwide – Bodycote plc
| Mechanical or Industrial Engineering | | | > $1B |
| | Information Technology and Services | San Francisco | CA | $0 - 1M |
| | Internet | | | $1 - 10M |
| | E-Learning | Calgary | AB | $1 - 10M |
| | Wine and Spirits | Napa | CA | $1 - 10M |
| | Financial Services | San Francisco | CA | $50 - 100M |
| BoundlessBoundless | Promotional Products & Branded Merchandise | Marketing and Advertising | | | $50 - 100M |
| BlueCat
DNS, DHCP & IPAM Solutions | BlueCat | Computer Networking | Toronto | ON | $10 - 50M |
| | Financial Services | TUMWATER | WA | $10 - 50M |
| | Information Technology and Services | Glasgow | SCT | $50 - 100M |
| | Leisure, Travel & Tourism | Zug | Zug | $10 - 50M |
| | Computer Networking | Mountain View | CA | $0 - 1M |
| | Construction | San Leandro | CA | $10 - 50M |