| Fogwill & Jones (Legal Services) Limited | Professional & scientific | 2001 |
| Fogwill & Jones Asset Management Limited | Financial services | 2005 |
| Foilart Limited | Manufacturing | 2019 |
| Fois Services Limited | Health & social care | 2020 |
| Fojo Ltd | Manufacturing | 2019 |
| Folade Limited | Real estate | 2012 |
| Foldspare Limited | Real estate | 1986 |
| Foleydee Limited | Wholesale & retail | 2023 |
| Folio & Partners Limited | Administrative & support | 2023 |
| Folksy Limited | Wholesale & retail | 2006 |
| Folktech Limited | Construction | 2012 |
| Folkwood Garden Services Ltd | Administrative & support | 2012 |
| Follow Focus Ltd | Information & communication | 2007 |
| Follow the Triangle Ltd | Wholesale & retail | 2024 |
| Following X Ltd | Manufacturing | 2023 |
| Fondel Alloys Limited | Wholesale & retail | 2010 |
| Fone Mania Sheffield Ltd | Wholesale & retail | 2022 |
| Fone Mania South Yorkshire Ltd | Wholesale & retail | 2025 |
| Fonedoctor (Wholesale) Limited | Wholesale & retail | 2019 |
| Food and Community Trust | Education | 2022 |
| Food and Wine One Limited | Wholesale & retail | 2026 |
| Food Fusion Sport Nutrition Limited | Manufacturing | 2025 |
| Food Fusion Wellness Ltd | Hospitality | 2025 |
| Food Matters Stocksbridge Limited | Hospitality | 2022 |
| Food Maze Limited | Wholesale & retail | 2024 |
| Food Plus 1 Limited | Wholesale & retail | 2026 |
| Food Plus Pitsmoor Ltd | Wholesale & retail | 2023 |
| Food Safety & Training Services Ltd | Hospitality | 2009 |
| Food to Door Ltd | Hospitality | 2020 |
| Food Works Sheffield Ltd. | Hospitality | 2015 |
| Foodemporiumuk Ltd | Hospitality | 2022 |
| Foodmac International Limited | Wholesale & retail | 2003 |
| Foodology Limited | Hospitality | 2013 |
| Foods for Thought Ltd | Hospitality | 2014 |
| Football for Foodbanks CIC | Education | 2021 |
| Football FUN Factory (Community 132) Limited | Arts & recreation | 2024 |
| Football Sports LIN Limited | Wholesale & retail | 2025 |
| Football Unites Racism Divides Educational Trust | Health & social care | 2012 |
| Footballworld Limited | Wholesale & retail | 2007 |
| Footfirst Care Limited | Health & social care | 2023 |
| Foothills (Sheffield) Limited | Wholesale & retail | 1996 |
| Footlabs Limited | Manufacturing | 2008 |
| Footprint Photography Ltd | Professional & scientific | 2008 |
| Footprint Properties Ltd | Water & waste | 2011 |
| Footprint Sheffield Limited | Manufacturing | 2007 |
| Footprint Tools Limited | Manufacturing | 1921 |
| FOOTPRINT22 Limited | Financial services | 2010 |
| Footsteps Theatre Ltd | Arts & recreation | 2021 |
| Footworkz Ltd | Administrative & support | 2025 |
| Fooz Ltd. | Administrative & support | 2017 |
| FOR ALL Robots Ltd | Information & communication | 2025 |
| FOR Betterment Limited | Health & social care | 2009 |
| FOR Fish Sake Limited | Wholesale & retail | 2025 |
| FOR Product People Limited | Professional & scientific | 2017 |
| FOR the Lovers Limited | Wholesale & retail | 2025 |
| Foraging Food FUN Limited | Agriculture & fishing | 2023 |
| Forbes & Partners Ltd | Professional & scientific | 2023 |
| Forbescrs Ltd | Administrative & support | 2023 |
| Forcasteels International Limited | Manufacturing | 2012 |
| Force Contracts Ltd | Construction | 2012 |
| Forced Entertainment Limited | Arts & recreation | 1987 |
| Ford Music Holdings Ltd | Financial services | 2023 |
| Ford Music Limited | Information & communication | 2017 |
| Ford Quarry Limited | Financial services | 2025 |
| Ford Windows Limited | Manufacturing | 1994 |
| Ford-Mitchell Facilities Management Ltd | Hospitality | 2025 |
| Forde Recruitment Limited | Administrative & support | 1999 |
| Forde's First Recruitment Ltd | Administrative & support | 2024 |
| Fordvag Auto Spares Ltd | Wholesale & retail | 2025 |
| Forensic Mental Health Limited | Administrative & support | 2018 |
| Forensic Psychological Services Ltd | Health & social care | 2010 |
| Foresight Music Limited | Arts & recreation | 2012 |
| Forest & Fell Limited | Manufacturing | 2026 |
| Forest Oak Financial Planning Ltd | Financial services | 2022 |
| Forestdogs Ltd | Agriculture & fishing | 2019 |
| Forestea Ltd | Hospitality | 2026 |
| Foresteers Outdoor Preschool Ltd | Health & social care | 2018 |
| Forever @ Home Ltd | Public administration | 2025 |
| Forever Diamond Limited | Wholesale & retail | 2024 |
| Forever Graceful Ltd | Information & communication | 2025 |
| Forever Grass Limited | Professional & scientific | 2014 |
| Forever Living Ltd | Real estate | 2018 |
| Forever Warm Heating Ltd | Construction | 2012 |
| Forevergreen Lawn Care Ltd | Administrative & support | 2020 |
| Forex Price Action Ltd | Administrative & support | 2015 |
| Forge (Yorkshire) Limited | Construction | 2025 |
| Forge and Filter Ltd | Hospitality | 2025 |
| Forge Class Software Ltd | Information & communication | 2025 |
| Forge Denim Limited | Wholesale & retail | 2016 |
| Forge Electrical Services Ltd | Construction | 2022 |
| Forge Equipment Servicing Ltd | Manufacturing | 2026 |
| Forge Events Limited | Hospitality | 2023 |
| Forge Functional Fitness Academy CIC | Education | 2025 |
| Forge Functional Fitness UK Ltd | Arts & recreation | 2019 |
| Forge Lane Recreation Ground Community Interest Company | Administrative & support | 2024 |
| Forge Lane Sports Ground CIC | Arts & recreation | 2015 |
| Forge Living Limited | Real estate | 2025 |
| Forge Mill (Oughtibridge) Residents Association Limited | Households | 2002 |
| Forge Mill Apartments Limited | Households | 2009 |
| Forge Pictures Limited | Information & communication | 2022 |