| Hub East Central (SCV) Midco Limited | Administrative & support | 2016 |
| Hub East Central Scotland Limited | Administrative & support | 2011 |
| Hugh Campbell & Sons (Doune) Limited | Wholesale & retail | 2009 |
| Hugh Macpherson (Scotland) Limited | Real estate | 1946 |
| Hummus Edinburgh Ltd | Hospitality | 2018 |
| Hunter Surfacing Ltd | Construction | 2016 |
| Hunter Transport Ltd. | Transport & logistics | 2007 |
| Hunter's Rentals Ltd | Real estate | 2024 |
| Huntingtower Plant Ltd | Administrative & support | 2013 |
| Hurrells Spottiswoode Limited | Administrative & support | 2013 |
| Hydro-Genie Ltd | Manufacturing | 2016 |
| HYM2 Services Limited | Hospitality | 2025 |
| I.H.A Services Limited | Administrative & support | 2024 |
| I4DATA Ltd | Information & communication | 2006 |
| IAN Kennedy Joinery Services Ltd | Construction | 2022 |
| IAN Mair Contracts Ltd | Construction | 2026 |
| Iberico Foods Limited | Wholesale & retail | 2014 |
| Iberico Holdings Limited | Financial services | 2022 |
| Ice and Freezy Limited | Professional & scientific | 2020 |
| Icerobotics Holdings Ltd | Professional & scientific | 2007 |
| Icerobotics Ltd | Manufacturing | 2007 |
| Idar Sales LP | | 2016 |
| Idrill Limited | Mining & quarrying | 2003 |
| IH Fast Food Ltd | Hospitality | 2024 |
| IIS Facilities Services Ltd | Administrative & support | 2023 |
| IMO Plant Ltd | Construction | 2025 |
| Impact NFT Ltd | Information & communication | 2020 |
| Impulse Team Limited | Professional & scientific | 2023 |
| Imrie Coal Merchants Ltd | Wholesale & retail | 2014 |
| IN Tandem Development Limited | Administrative & support | 2009 |
| IN the Heather Ltd | Manufacturing | 2023 |
| Inca Consultancy Limited | Professional & scientific | 2017 |
| Inception Catering ( Scotland) Ltd | Hospitality | 2025 |
| Inception Catering Limited | Hospitality | 2017 |
| Incite Technology Limited | Information & communication | 2003 |
| Incubate Consulting Limited | Professional & scientific | 2019 |
| Incyte Consulting Ltd. | Information & communication | 2007 |
| Indigo Sun Limited | Other services | 2021 |
| Industrial Flooring Systems Ltd | Construction | 2019 |
| Industrial Home Blinds (Manufacturers) Limited | Manufacturing | 2003 |
| Industry Spotlight Limited | Administrative & support | 2009 |
| Inertia Consulting (Scotland) Limited | Professional & scientific | 2024 |
| Info Mavericks Ltd | Professional & scientific | 2025 |
| Infotrak Development LP | | 2016 |
| Injection Imports Ltd | Wholesale & retail | 2011 |
| Inlux Management LP | | 2016 |
| Inmersio Ltd | Education | 2025 |
| Inn Business (Scotland) Limited | Professional & scientific | 2009 |
| Inn Business 2025 Limited | Professional & scientific | 2025 |
| Innovize Services Ltd | Construction | 2023 |
| Inproget Limited | Wholesale & retail | 2025 |
| Install IT ALL Ltd | Construction | 2025 |
| Integra Loss Control Associates Limited | Professional & scientific | 2003 |
| Integrated Graphene Holding Limited | Professional & scientific | 2018 |
| Integrated Graphene Limited | Professional & scientific | 2016 |
| Integrated Graphene Services Limited | Professional & scientific | 2014 |
| Integrated Infrastructure Services Limited | Construction | 2013 |
| Integrated Wealth Management Ltd | Financial services | 2011 |
| Intelectics Ltd | Manufacturing | 2023 |
| Interiors by Catherine Limited | Professional & scientific | 2015 |
| International Glory LP | | 2016 |
| Interstate Merchant Checkalert | | 2009 |
| Interstellar Limited | Professional & scientific | 2004 |
| Intest International LP | | 2016 |
| Into Stirling LLP | | 2013 |
| Intrepid Scotland C.I.C. | Education | 2012 |
| Intuition Scot Maths Ltd | Education | 2023 |
| Inverallan Cleanco Ltd | Administrative & support | 2025 |
| Iphonetrainer Ltd | Professional & scientific | 2008 |
| Ipower Action Ltd | Other services | 2011 |
| Iridis Digital Limited | Information & communication | 2017 |
| Isle of Skye Salmon Limited | Agriculture & fishing | 2019 |
| Isrartraders Ltd | Wholesale & retail | 2025 |
| Itec Engineering Solutions Ltd | Information & communication | 2014 |
| ITZ Training Limited | Arts & recreation | 2014 |
| IU Retail Ltd | Wholesale & retail | 2023 |
| Ivanka Simeonova Ltd | Transport & logistics | 2024 |
| Ivatt Motorhomes Ltd | Administrative & support | 2025 |
| J & a Duff Limited | Agriculture & fishing | 2022 |
| J & JAI Limited | Wholesale & retail | 2012 |
| J B Z Property Limited | Real estate | 2017 |
| J C 2 Limited | Real estate | 2003 |
| J C Civils and Surfacing Limited | Other services | 2016 |
| J Cuthill Engineering Ltd | Wholesale & retail | 2010 |
| J Gilvear Livestock Ltd | Agriculture & fishing | 2015 |
| J Graham Marine Services Ltd | Manufacturing | 2019 |
| J LOW Psychological Services Limited | Health & social care | 2015 |
| J Mclaughlan Ltd. | Construction | 2002 |
| J Young Properties Ltd. | Construction | 2007 |
| J&B Future Limited | Financial services | 2025 |
| J&E Properties Ltd | Real estate | 2025 |
| J&N Logistics Ltd | Transport & logistics | 2025 |
| J.B. Bennett (Glasgow) Limited | Professional & scientific | 1944 |
| J.D. Smith & Sons Ltd. | Construction | 2018 |
| J.S.G. Warren Consultants Limited | Administrative & support | 2003 |
| J.W.M. LP | | 2016 |
| Jabs Asset Property Ltd | Extraterritorial | 2021 |
| Jackdaw Holdings Ltd | Information & communication | 2023 |
| JAI Group Scotland Ltd | Real estate | 2025 |
| James Symon (Joiners) Ltd. | Construction | 2002 |