| Fitbit Inc.Fitbit Official Site for Activity Trackers & More | Health, Wellness and Fitness | San Francisco | CA | > $1B |
| | Electrical/Electronic Manufacturing | Leeds | | $500M - 1B |
| | Financial Services | | | > $1B |
| | Computer & Network Security | Sunnyvale | CA | $250 - 500M |
| | Financial Services | Palo Alto | CA | > $1B |
| FuturemarkFuturemark - best benchmarks and system performance tests | Computer Software | Espoo | Southern Finland | $1 - 10M |
| | Computer Networking | Seattle | WA | > $1B |
| | Computer Software | Helsinki | N/A | $100 - 250M |
| | Telecommunications | Long Beach | CA | $10 - 50M |
| FlightViewReal Time Flight Tracker & Airport Delays from FlightView | Aviation & Aerospace | Newton | MA | $1 - 10M |
| Flight Centre Limiteditemprop="title">Cheap Flights by Australia's Unbeatable Travel Agents - Flight Centre | Leisure, Travel & Tourism | Brisbane City | QLD | $10 - 50M |
| FOREX ADVISORSForex Trading Online | FX Markets | Currencies, Spot Metals & Futures | FOREX.com | Financial Services | Forest Hills | | $10 - 50M |
| | Semiconductors | San Jose | CA | > $1B |
| | Financial Services | London | England | $250 - 500M |
| | Entertainment | Culver City | CA | $0 - 1M |
| Fish4jobsJob Search | Job Site for UK Jobs & Vacancies | Fish4 | Online Media | London | | $10 - 50M |
| | Information Technology and Services | Irving | TX | $1 - 10M |
| FormlabsDesktop Stereolithography (SLA) 3D Printers – Formlabs | Consumer Electronics | Somerville | MA | $1 - 10M |
| ForeTees, LLCForeTees Online Reservations Systems For Private Clubs | Sports | St. Paul | MN | $0 - 1M |
| | Online Media | Sydney | NSW | $500M - 1B |
| | Education Management | Irvington | NY | $1 - 10M |
| | Events Services | Dallas | TX | > $1B |
| | Utilities | Warwick | England | $0 - 1M |
| | Investment Management | Chiyoda-ku | Tokyo | |
| | Computer Software | Victoria | BC | $1 - 10M |
| Flexera SoftwareFlexera - Software Asset Management for Producers and Enterprises | Computer Software | Itasca | IL | $100 - 250M |
| | Financial Services | Boston | MA | |
| | Financial Services | San Mateo | CA | $250 - 500M |
| FlextronicsFlex: Innovative Designs, Agile Manufacturing, Transparent Supply Chain | Flex | Electrical/Electronic Manufacturing | Singapore | | > $1B |
| | Professional Training & Coaching | Salt Lake City | UT | $50 - 100M |
| | Financial Services | San Francisco | CA | $1 - 10M |
| FocusEconomicsEconomic Indicators, News and Forecasts - FocusEconomics | Information Services | Barcelona | Catalonia | $1 - 10M |
| | Leisure, Travel & Tourism | Blackheath | Johannesburg | $100 - 250M |
| FICOFICO? | FICO Decisions | Computer Software | San Jose | CA | $500M - 1B |
| | Computer Games | Winter Park | FL | $10 - 50M |
| FrooitioneBay Store Design eBay Templates by Frooition | Internet | Brierley Hill | west midlands | $1 - 10M |
| FirmexFirmex Virtual Data Rooms & Secure Online Document Sharing | Computer Software | Toronto | ON | $10 - 50M |
| | Computer Networking | Everett | WA | $250 - 500M |
| FASTBOOKINGFASTBOOKING - Bring the digital traveler to your doorstep | Hospitality | Paris | Ile-de-France | $100 - 250M |
| FitStarDiscover Fitstar - Inspiring people to live healthier lives | Health, Wellness and Fitness | San Francisco | CA | $0 - 1M |
| | Apparel & Fashion | | | |
| Folio Investing
Folio Investing | Investment Brokerage with Commission-Free Online Trading
| Financial Services | McLean | VA | $10 - 50M |
| FourthCost Control Hospitality Software | Fourth | Information Technology and Services | London | England | $50 - 100M |
| | Marketing and Advertising | Merion Station | PA | $1 - 10M |
| | Banking | Indianapolis | IN | $1 - 10M |
| FinancialForce.comCloud Accounting, Services Automation, HR Software on Salesforce - FinancialForce | Computer Software | San Francisco | CA | $100 - 250M |
| FirespringWelcome to Firespring: A force for good. | Marketing and Advertising | Lincoln | NE | $10 - 50M |
| | Leisure, Travel & Tourism | Auckland | Auckland | > $1B |
| FMG SuiteAutomated Content Marketing for Financial Advisors | Marketing and Advertising | San Diego | CA | $10 - 50M |
| First AlertFirst Alert – America's #1 Most Trusted Brand in Home Safety | Consumer Goods | Aurora | IL | $500M - 1B |
| funeralOneFuneral Home Web Site Design, Funeral Tribute Video Software, Funeral Home
Consulting | Internet | Detroit | MI | $1 - 10M |
| | Internet | New York | NY | $1 - 10M |
| | Museums and Institutions | MUKILTEO | WA | $0 - 1M |
| | Computer Software | Newburyport | MA | $1 - 10M |
| | | | | $1 - 10M |
| FollozeFolloze - ABM Sales Platform | Computer Software | Palo Alto | CA | $0 - 1M |
| FraedomExpense management made easy with Fraedom | Fraedom | Information Technology and Services | London | England | |
| FuelXFuelX | Reach new customers with programmatic video advertising | Computer Software | San Francisco | CA | |
| FreespeeHome | Freespee - The Conversation Cloud | Marketing and Advertising | Uppsala | | $1 - 10M |
| FivetranMiddleware for saas data - Fivetran | Computer Software | San Francisco | CA | $1 - 10M |
| | Financial Services | | | $50 - 100M |
| | Financial Services | SACRAMENTO | CA | $1 - 10M |
| | Financial Services | Fairfield | CT | $10 - 50M |
| | Computer Software | London | | $1 - 10M |
| Foreword Reviewsitemprop="name">Book Reviews and Coverage of Indie Publishers — Foreword Reviews | Publishing | Traverse City | MI | $0 - 1M |
| | Leisure, Travel & Tourism | Brisbane | | $10 - 50M |
| | Biotechnology | Charlottesville | VA | $0 - 1M |
| | Public Relations and Communications | New York | NY | $50 - 100M |
| FINCADDerivatives Risk Management Software & Pricing Analytics | FINCAD | Computer Software | Surrey | BC | $10 - 50M |
| | Investment Banking | San Francisco | CA | $50 - 100M |
| FonoloCall-Back Software for the Call Center | Computer Software | Toronto | ON | $1 - 10M |
| | Marketing and Advertising | Washington | DC | $10 - 50M |
| | Financial Services | Philadelphia | PA | |
| | Professional Training & Coaching | Banbury | Oxfordshire | |
| FreightPros
Freight Quotes | LTL Freight Quotes | Truckload Freight Shipping Rates | FreightPros | Logistics and Supply Chain | | | $10 - 50M |
| FineCalAdhesives, Technical Tapes and Abrasives | 3M Distributor | Mechanical or Industrial Engineering | Bristol | | $1 - 10M |
| FusebillFusebill: Subscription & Recurring Billing Management Software | Information Technology and Services | Ottawa | ON | $1 - 10M |
| | Computer Software | Bozeman | MT | $1 - 10M |
| | Industrial Automation | Hessle | PA | $100 - 250M |
| | Management Consulting | New York | NY | $1 - 10M |
| Furnished Quarters
Corporate Housing: Short-Term Furnished Apartments - Furnished Quarters
| Hospitality | New York | NY | $1 - 10M |
| Foodservicecrm.comAn Online Community for the Foodservice Industry | News, Information, and Foodservice Jobs | Computer Software | Manchester | CT | $0 - 1M |
| FitbugDigital Wellness | Fitbug | Health, Wellness and Fitness | London | | $1 - 10M |
| Fora FinancialSmall Business Loans | Business Funding | Fora Financial | Financial Services | New York | NY | $10 - 50M |
| | Health, Wellness and Fitness | Roanoke | VA | $10 - 50M |
| FilmetricsThin Film Thickness Measurement Systems by Filmetrics | Semiconductors | SAN DIEGO | CA | $1 - 10M |
| Future FirstFuture First - an alumni community for every state school and college | Education Management | London | | $0 - 1M |
| | Information Technology and Services | Uster | | $1 - 10M |
| | Computer Software | Parsipanny | NJ | |
| FourthCost Control Hospitality Software | Fourth | Information Technology and Services | London | England | $50 - 100M |
| | Investment Management | McLean | VA | $0 - 1M |
| | Mechanical or Industrial Engineering | Oakland | CA | $10 - 50M |
| Fresh Direct (UK)Fresh Direct | Fresh Food Supplier | Wholesale Food SupplyFresh Direct | Food & Beverages | Bicester | Oxfordshire | $100 - 250M |
| | Events Services | Santa Cruz | CA | $50 - 100M |
| | Design | Hallowell | ME | $1 - 10M |
| Fleetcare
Fleet Management | Novated Leases Australia | Fuel Cards | Fleetcare
| Automotive | Perth | Western Australia | $10 - 50M |
| | | CHIYODA-KU | | $500M - 1B |
| | Wireless | Boulder | CO | $10 - 50M |
| FarrowFarrow - Customs, Trade Compliance & Logistics | Import and Export | Windsor | ON | $100 - 250M |
| | Telecommunications | Denver | CO | $1 - 10M |