| Investments Overseas L.P. | | 2014 |
| ION Dance Academy | | 2023 |
| Ionic Global Resourcing Group Limited | | 2026 |
| Ipenguins Solutions L.P. | | 2014 |
| Ipibi L.P. | | 2015 |
| Ipswich Two Leisure 2 Limited | | 2023 |
| Iridium Holdings Limited | | 2026 |
| Iris Private Limited | | 2022 |
| Ironage Entertainment LP | | 2015 |
| Isalberti Limited | Professional & scientific | 2005 |
| Island Initiatives Limited | | 2023 |
| Island NET LP | | 2014 |
| Island Village (Unit Eight) Limited | Professional & scientific | 1996 |
| Island Village (Unit Fifteen) Limited | Professional & scientific | 1996 |
| Island Village (Unit Five) Limited | Professional & scientific | 1996 |
| Island Village (Unit Seven) Limited | Professional & scientific | 1996 |
| Island Village (Unit Seventeen) Limited | Professional & scientific | 1996 |
| Island Village (Unit SIX) Limited | Professional & scientific | 1996 |
| Island Village (Unit Sixteen) Limited | Professional & scientific | 1996 |
| Isle of MAN Breweries Limited | | 2023 |
| Issab Holdings Limited | | 2023 |
| Istentrade LP | | 2015 |
| Italian Brands LP | | 2014 |
| ITC Logistics LP | | 2015 |
| Ivatt Limited | | 2023 |
| Ivel Limited | | 2022 |
| Iverna Limited | | 2023 |
| Ivory Management Limited | | 2023 |
| IVY Investments Limited | | 2022 |
| IVY Limited | | 2022 |
| IWM Management L.P. | | 2014 |
| J & E Properties Limited | | 2024 |
| J.& F. Holdings Limited | | 2023 |
| Jacoandmia Limited | | 2022 |
| Jacobus (Isle of MAN) Limited | | 1996 |
| Jade Investments Limited | | 2023 |
| Jahama P10 Limited | | 2023 |
| Jahama P11 Limited | | 2023 |
| Jahama P15 Limited | | 2023 |
| Jahama P16 Limited | | 2023 |
| Jahama P7 Limited | | 2023 |
| Jahama P8 Limited | | 2023 |
| Jakarta Limited | | 2022 |
| Jakoba Limited | | 2023 |
| Jalal Property Company Limited | | 2022 |
| Jalden Limited | | 2022 |
| Jamaica Shipping LP | | 2013 |
| Jantok Limited | | 2023 |
| JAR Motors LP | | 2014 |
| Jard Limited | | 2022 |
| Jarlana Limited | | 2023 |
| Jarwen Limited | | 2022 |
| JAS Swaran Limited | | 2023 |
| Jashada Limited | | 2023 |
| Jasmick Limited | | 2023 |
| Jasmine Residential Limited | | 2022 |
| Jaybee Limited | | 2023 |
| JCH Limited | | 2023 |
| JDO Trustees Limited | | 2023 |
| Jennyfield Limited | | 2023 |
| Jenos Limited | | 2023 |
| Jermyn Street Properties Limited | | 2023 |
| Jerome Investments Limited | | 2023 |
| Jessona Investments Limited | | 2022 |
| Jessup (Trustees) Limited | | 2023 |
| Jewelry Management L.P. | | 2015 |
| JF Properties Limited | | 2022 |
| JJA Limited | | 2023 |
| Jjjmj Limited | | 2023 |
| JK Properties (East Anglia) Limited | | 2022 |
| JMS Estates (IOM) Limited | | 2023 |
| JNA Holdings Limited | | 2023 |
| Joan Floyd Properties Limited | | 2023 |
| Jogi Limited | | 2023 |
| Johardi Investments Limited | Professional & scientific | 1997 |
| Johnston II Management L.P. | | 2014 |
| Jolami Enterprises Inc | | 2022 |
| Jonala Properties Limited | | 2023 |
| JR Holdings Limited | | 2023 |
| JRM Investments Limited | | 2023 |
| JRP Paddocks Limited | | 2022 |
| JSO Limited | | 2023 |
| Jumbo Imports-Exports L.P. | | 2013 |
| Jumeirah Investments Limited | | 2023 |
| Jumeriah Limited | | 2023 |
| Junction 34 South Limited | | 2023 |
| Juniper Overseas Limited | | 2023 |
| Jupiter Properties Limited | | 2022 |
| Juristrust Limited | | 2023 |
| Just Business Investments L.P. | | 2013 |
| Just Business Technology L.P. | | 2014 |
| Just I.T. Business L.P. | | 2015 |
| Just Management Solutions L.P. | | 2014 |
| Just Marine L.P. | | 2013 |
| Just Support L.P. | | 2011 |
| Just Technical L.P. | | 2013 |
| Just Technology Supplies L.P. | | 2014 |
| Just Worldwide Investments L.P. | | 2013 |
| JV Alliance Limited | | 2023 |
| K.P.M. (IOM) Limited | | 2021 |