| Comus Solutions LP | | 2015 |
| Concept Metals Ltd | Manufacturing | 2009 |
| Concor Trading Limited | Manufacturing | 2026 |
| Concreate Skateparks Limited | Construction | 2013 |
| Connected Baby Limited | Education | 2015 |
| Connoisseur Apparel Limited | Manufacturing | 2006 |
| Connoisseurs Coffee Club Ltd | Manufacturing | 2020 |
| Connor Feeney PT Ltd | Education | 2025 |
| Constance Care Limited | Health & social care | 1997 |
| Construct - Able Limited | Construction | 2011 |
| Construction Labour Supplies Ltd | Administrative & support | 2015 |
| Construction Management & Site Safety Services Limited | Construction | 2016 |
| Consul Auto LP | | 2017 |
| Consultant in Asbestos Management Ltd | Construction | 2020 |
| Content Marketing Academy Ltd | Professional & scientific | 2012 |
| Contlux Invest L.P. | | 2015 |
| Control Football Academy Ltd | Education | 2024 |
| Convitality Ltd | Information & communication | 2022 |
| Conway Consultants Limited | Professional & scientific | 2009 |
| Conway Trade L.P. | | 2011 |
| Conzosbiz Ltd | Transport & logistics | 2026 |
| Coopella Properties Ltd | Real estate | 2025 |
| Cooper & Mckenzie Limited | Real estate | 1946 |
| Coorie Nomads Ltd | Hospitality | 2025 |
| Copleys Flat Roofing Limited | Construction | 2022 |
| Copper HUE Limited | Other services | 2022 |
| Copper Rose Interiors Limited | Other services | 2018 |
| Coppice Investments Limited | Hospitality | 2016 |
| Coralshore Limited | Education | 1998 |
| CORD99 Limited | Hospitality | 2015 |
| Cordlink Networks L.P. | | 2015 |
| Core Mechatronics Limited | Professional & scientific | 2008 |
| Corem Ltd | Education | 2026 |
| Corfu NAZ Limited | Hospitality | 2023 |
| Corfu Original Ltd | Hospitality | 2023 |
| Cornbridge Invest L.P. | | 2015 |
| Cornerstone Glasgow Limited | Extraterritorial | 2000 |
| Cornerstone Informatics Ltd | Information & communication | 2009 |
| Cornlex Products L.P. | | 2015 |
| Corpberg Partners L.P. | | 2016 |
| Corso Property Developments Limited | Real estate | 2022 |
| Cortachy Holdings Limited | Professional & scientific | 1992 |
| Cortech Consulting Ltd | Financial services | 2023 |
| Cosgrove Metals Ltd. | Other services | 2016 |
| Cosmetology Beauty Ltd | Other services | 2020 |
| Cotmuir Consultancy Limited | Information & communication | 2014 |
| Could Care Ltd | Health & social care | 2025 |
| Countex Worldwide L.P. | | 2016 |
| Countport Trade L.P. | | 2015 |
| Coupland Marine Services Ltd | Transport & logistics | 2022 |
| Court Street Enterprises Limited | Wholesale & retail | 2017 |
| Cous Cous Invest Group Limited | Real estate | 2016 |
| Covalence Future Ltd | Information & communication | 2024 |
| Cozar Ltd | Transport & logistics | 2016 |
| Cozzy Properties Ltd. | Real estate | 2020 |
| CP Engineering (Dundee) Ltd | Construction | 2023 |
| CR Comms Ltd | Administrative & support | 2012 |
| Crafty and Bean CIC | Hospitality | 2024 |
| Crafty FOX Bars Ltd | Arts & recreation | 2017 |
| Craig Finance Limited | Professional & scientific | 2025 |
| Craig Millar Decorator Limited | Construction | 2026 |
| Craig Wallace Properties Ltd | Real estate | 2022 |
| Craigdhu Beacon Ltd | Construction | 2015 |
| Craigdhu Consulting Ltd | Professional & scientific | 2014 |
| Craighall Accounting Services Limited | Professional & scientific | 2002 |
| Craighill Welding Services Ltd | Construction | 2025 |
| Craigie Estates Limited | Real estate | 2003 |
| Craiglee Engineering Ltd | Manufacturing | 2010 |
| Craigowl Electrical Ltd | Construction | 2022 |
| Craigowl Holdings Ltd. | Professional & scientific | 2004 |
| Craigowl Investments Ltd | Financial services | 2017 |
| Craigowl Ltd | Mining & quarrying | 2019 |
| Craigowl Properties Limited | Construction | 2017 |
| Craigsknowe Investments Limited | Real estate | 2016 |
| Craigstewarthairdressing Limited | Administrative & support | 2016 |
| Craik Civil Engineering Limited | Professional & scientific | 2023 |
| Craik Intervention Services Ltd | Mining & quarrying | 2022 |
| Cransley First | | 2002 |
| Crave Ice Ltd | Hospitality | 2026 |
| Cravin' Crrispy Ltd | Hospitality | 2020 |
| Crazy Lazy League Ltd | Arts & recreation | 2026 |
| CRB Well Services Ltd | Mining & quarrying | 2009 |
| CRE Engineering Ltd | Information & communication | 2015 |
| Cream Temptations Ltd | Administrative & support | 2017 |
| Create & Chat Collective CIC | Arts & recreation | 2025 |
| Create Enhanced Spaces Ltd | Manufacturing | 2016 |
| Createeditproofread LLP | | 2019 |
| Creation Invitation Ltd | Arts & recreation | 2016 |
| Creative Core Limited | Information & communication | 2003 |
| Creative Dundee | Arts & recreation | 2013 |
| Creative Landscapes and Building Services Limited | Construction | 2019 |
| Creative Studios Dundee C.I.C. | Real estate | 2025 |
| Credevate Solutions Limited | Information & communication | 2026 |
| Credoflex Development L.P. | | 2015 |
| Credoinvest L.P. | | 2014 |
| Creme DE LA Crepe Limited | Hospitality | 2006 |
| Crescent Creative Media Ltd | Information & communication | 2021 |
| Creston Estates Limited | Real estate | 2001 |
| CRF Global Limited | Information & communication | 2010 |
| Crichton Holdings Ltd | Real estate | 2015 |