| Nice Travel Services Limited | Administrative & support | 2025 |
| Niche Commercial Limited | Administrative & support | 2023 |
| Niche Communications Global Limited | Professional & scientific | 2024 |
| Nichol Smith Development Limited | Real estate | 2019 |
| Nichol Smith Holdings Limited | Construction | 2020 |
| Nichol Smith Investments Ltd | Real estate | 2019 |
| Nicholas Paul Wealth Management Limited | Professional & scientific | 2019 |
| Nicholas Rutledge Alexander Roberts Ltd | Extraterritorial | 2025 |
| Nicholas Yacht Consulting Limited | Professional & scientific | 2026 |
| Nicholson Joinery Limited | Construction | 2017 |
| Nicholson SLP | | 1996 |
| Nicholson, Green & Co | | 1994 |
| Nick Barley Ltd | Information & communication | 2023 |
| Nick Bennett Limited | Professional & scientific | 2024 |
| Nick Binge Ltd | Arts & recreation | 2021 |
| Nick Callaghan Ltd | Professional & scientific | 2017 |
| Nick Smith Consultancy Services Limited | Professional & scientific | 2023 |
| Nick Stewart Media Consultancy Limited | Professional & scientific | 2012 |
| Nicki Denholm Consulting Limited | Professional & scientific | 2024 |
| Nickie-Ben Limited | Information & communication | 2022 |
| Nico Consult LP | | 2016 |
| Nico Sea Trading LP | | 2018 |
| Nico Transportation Ltd | Transport & logistics | 2020 |
| Nicol Alexander Ltd | Information & communication | 2005 |
| Nicol Anderson & Company Limited | Manufacturing | 1927 |
| Nicol ASD Ltd | Professional & scientific | 2023 |
| Nicol Property Ltd | Real estate | 2026 |
| Nicola Battison Limited | Health & social care | 2008 |
| Nicola Johnston Limited | Professional & scientific | 2013 |
| Nicola Murray Foundation | Administrative & support | 2010 |
| Nicolas Compagnion Plumbing & Heating Ltd | Construction | 2018 |
| Nicolson Investments LP | | 2013 |
| Nicolson Square Venues Limited | Other services | 2024 |
| Nicom Metal L.P. | | 2017 |
| Nicorette Capital LP | | 2012 |
| Nicosia Inter LP | | 2012 |
| Nida Associates L.P. | | 2014 |
| Niddrie Community Church | Other services | 2011 |
| Niddrie House Park Ltd | Wholesale & retail | 2025 |
| Niddry (Winchburgh) Limited | Real estate | 2017 |
| Niddry Bing Limited | Water & waste | 2002 |
| Niddry Investments Limited | Administrative & support | 2017 |
| Nidja Management LLP | | 2021 |
| Nidus Imaging Limited | Health & social care | 2021 |
| Niels Prom LP | | 2018 |
| Niez Digital LP | | 2025 |
| Niffler Holdings | Administrative & support | 2025 |
| Nige Humphrey Risk & Performance Management Consultant Limited | Real estate | 2018 |
| Nigel Darling Limited | Professional & scientific | 2024 |
| Nigerian Community in Edinburgh - UK | Administrative & support | 2023 |
| Nigerians in Scotland CIC | Professional & scientific | 2025 |
| Niggscott Energy Ltd | Energy | 2019 |
| Night & Day Emergency Dent Edinburgh Limited | Health & social care | 2024 |
| Night Train Productions Limited | Administrative & support | 1997 |
| Nightcap Scotland Ltd. | Hospitality | 2017 |
| Nightfleet Limited | Extraterritorial | 1999 |
| Nighthawk Software Limited | Information & communication | 2013 |
| Nighthawk Solutions Limited | Information & communication | 2025 |
| Nihongo OK Limited | Information & communication | 2024 |
| Nik&Ana Ltd | Construction | 2020 |
| Nika Business Consulting LP | | 2016 |
| Nika Prom LP | | 2016 |
| Nikaa Consult LP | | 2017 |
| Nikars Limited | Arts & recreation | 2017 |
| Niki Corporation L.P. | | 2010 |
| Niki Hutchison Ltd | Administrative & support | 2019 |
| Nikki's Fleurs (Blackhall) Ltd | Wholesale & retail | 2024 |
| Nikki's Fleurs (Meadowbank) Ltd | Wholesale & retail | 2024 |
| Nikki's Fleurs Ltd | Wholesale & retail | 2024 |
| Nikkord Limited | Water & waste | 1983 |
| Nikon Solutions Limited | Administrative & support | 2010 |
| Nikos Bruntsfield Limited | Hospitality | 2025 |
| Nikos Coffee 3 Ltd | Hospitality | 2025 |
| Nikos Coffee Bruntsfield Ltd | Manufacturing | 2025 |
| Nikos Espresso Sandwich Ltd | Hospitality | 2024 |
| Nikos Morningside Ltd | Hospitality | 2024 |
| Nikos Morrison Street Ltd | Hospitality | 2026 |
| Nikos South Gyle Centre Ltd | Hospitality | 2024 |
| Niksen Properties LLP | | 2024 |
| Nile 47 Limited | Hospitality | 2016 |
| Nile Design Ltd | Professional & scientific | 2021 |
| Nile HQ Ltd | Information & communication | 2006 |
| Nile Valley (2025) Limited | Hospitality | 2025 |
| Nilgiri Spice and Catering Ltd | Hospitality | 2020 |
| Nilson Group LP | | 2016 |
| Nilved Consulting Ltd | Professional & scientific | 2025 |
| Nima & Kian Limited | Health & social care | 2007 |
| Nima Consultants Limited | Professional & scientific | 2023 |
| Nimara Limited | Real estate | 2025 |
| Nimble Digital Services Ltd | Information & communication | 2018 |
| Nimbleworf Enterprises Ltd | Real estate | 2023 |
| Nimbra Solutions LP | | 2015 |
| Nimbus Accountants Ltd | Professional & scientific | 2025 |
| Nimdaahconsulting Ltd | Real estate | 2025 |
| Nimeko LP | | 2021 |
| Nimmo Consulting Limited | Professional & scientific | 2009 |
| Nimrod Solutions Limited | Real estate | 2017 |
| Nims Trade LP | | 2016 |
| Nimtax LP | | 2014 |
| Nina L.P. | | 2013 |