| Iain Craig & Sons Ltd | Administrative & support | 2018 |
| Iain Irvine Hairdressing Ltd | Other services | 2026 |
| Iainteractive Ltd. | Information & communication | 2018 |
| IAM ARC Ltd | Professional & scientific | 2018 |
| Iamaa Ltd | Real estate | 2019 |
| Iamedinburgh Ltd | Real estate | 2023 |
| Iamonlineretail Ltd | Wholesale & retail | 2025 |
| Iamuk Ltd | Hospitality | 2023 |
| IAN Black Financial Services Ltd | Financial services | 2018 |
| IAN Black Inns Ltd | Hospitality | 2013 |
| IAN Cain Environmental Management Limited | Professional & scientific | 2020 |
| IAN Derrick Consulting Limited | Professional & scientific | 2023 |
| IAN Frame Limited | Manufacturing | 2014 |
| IAN HAY (Engineering) Limited | Manufacturing | 1990 |
| IAN K Smith Guitar Limited | Education | 2015 |
| IAN Mactaggart Charitable Trust | Real estate | 2010 |
| IAN Mcgrail Family Company Limited | Financial services | 2024 |
| IAN Mcleish & SON Limited | Wholesale & retail | 1977 |
| IAN Merriman Limited | Construction | 2010 |
| IAN Russell(Paints)Limited | Wholesale & retail | 1976 |
| IAN Smith Design (Edinburgh) Ltd | Wholesale & retail | 2016 |
| IAN Springford Holdings Limited | Construction | 2006 |
| Iapetus Energy Limited | Mining & quarrying | 2014 |
| IAS Landscape Management & Design Ltd | Professional & scientific | 2015 |
| IB Access Ltd | Administrative & support | 2025 |
| IB Thornton Ltd | Wholesale & retail | 2022 |
| Ib&K Investment Holding LP | | 2020 |
| IBA Limited | Professional & scientific | 2020 |
| IBA Sports Ltd | Wholesale & retail | 2020 |
| IBD Group Ltd | Information & communication | 2023 |
| Iberodocs CIC | Information & communication | 2019 |
| Ibex Digital Limited | Information & communication | 2024 |
| Ibexpert International LP | | 2019 |
| Ibidem Limited | Professional & scientific | 2010 |
| Ibis Property Limited | Professional & scientific | 2006 |
| Ibob Store Ltd | Wholesale & retail | 2025 |
| Ibrahim 15 Ltd. | Other services | 2017 |
| Ibrahim Handyman Services Ltd | Construction | 2026 |
| Ibrc Property Investors LP | | 2008 |
| IBS Eurocommerce LP | | 2016 |
| IBS Global LP | | 2015 |
| Ibsen House Ltd | Real estate | 2020 |
| IBT Building & Timber (Merchants) Ltd | Wholesale & retail | 2002 |
| IBU Edinburgh Limited | Arts & recreation | 2024 |
| Ibuilding Consultancy Ltd | Professional & scientific | 2013 |
| Ibys Trade LP | | 2015 |
| IC Professional Services Ltd | Professional & scientific | 2024 |
| IC Systems Limited | Education | 2014 |
| Ic&You LP | | 2017 |
| Icare Clean Limited | Administrative & support | 2024 |
| Icare People Limited | Administrative & support | 2021 |
| ICC Impex LP | | 2016 |
| Ice Blasters Edinburgh Ltd | Administrative & support | 2026 |
| Ice Blasters Scotland Ltd | Administrative & support | 2026 |
| Ice Business Services Ltd. | Mining & quarrying | 2011 |
| Ice Pick Books Limited | Extraterritorial | 2021 |
| Ice Rock Capital LP | | 2018 |
| Ice Sport (Dundee) Ltd. | Other services | 2017 |
| Icebo Limited | Professional & scientific | 2016 |
| Icebreak Trading LP | | 2012 |
| Icewindy Industries LP | | 2013 |
| Icewyn Logistics LP | | 2015 |
| ICG Asia Pacific III Scotland GP Limited Partnership | | 2016 |
| ICG Asia Pacific III Scotland Limited Partnership | | 2016 |
| ICG Commonwealth Law Firm Ltd | Professional & scientific | 2016 |
| ICG Longbow Senior NO. 3 LP | | 2019 |
| Icg-Longbow Development B LP | | 2014 |
| ICH BIN BEN Limited | Professional & scientific | 2012 |
| ICI Finance Consulting LP | | 2017 |
| Icicelts | Education | 2014 |
| Icoa International LP | | 2015 |
| Icon Brands (Global) Ltd | Financial services | 2023 |
| Icon Brands Ateam Ltd | Professional & scientific | 2023 |
| Icon Heating and GAS Services Ltd | Construction | 2021 |
| Icon Properties (Edinburgh) Ltd | Real estate | 2025 |
| Icon Siam Ltd | Hospitality | 2025 |
| Iconic Cosmetic Clinic Ltd | Health & social care | 2020 |
| Iconic IAN Clark Consulting Limited | Professional & scientific | 2012 |
| Iconicsx Limited | Agriculture & fishing | 2024 |
| Iconmac Limited | Real estate | 2026 |
| Iconsult IT Limited | Education | 2012 |
| Icosillion Ltd | Information & communication | 2019 |
| ICP Consultancy Limited | Professional & scientific | 2022 |
| ICP Corbet Place SLP | | 2009 |
| ICP Trinity GP1 LLP | | 2023 |
| ICS Consulting Services LP | | 2016 |
| ICS Genomics Ltd | Information & communication | 2025 |
| Icss Automations Services Ltd | Manufacturing | 2016 |
| Icterra LP | | 2015 |
| ICW Consultants Scot Ltd | Administrative & support | 2022 |
| ID Active LP | | 2015 |
| ID Hair Ltd | Other services | 2018 |
| ID Property Management L.P. | | 2010 |
| ID Property Services Ltd | Construction | 2023 |
| ID Provokers LP | | 2012 |
| ID1 Group Ltd | Real estate | 2020 |
| IDA Legends Ltd | Wholesale & retail | 2023 |
| Idap Solutions LP | | 2012 |
| Ide-International Limited | Information & communication | 2012 |
| Idea Absolute LP | | 2015 |