| Clarksons of Edinburgh | Jeweller | 87 W Bow, Victoria St | Mon–Sat 10:30–16:00 |
| Clean Digital | Marketing agency | Leith, Clockwise, 84 Commercial St | Thu 09:00–18:00 |
| Cold Town House | Bar | 4 Grassmarket | Mon–Thu 12:00–23:00 |
| Colinton Private Nursery | Nursery school | 22 Dreghorn Loan | Mon–Fri 08:00–18:00 |
| Comely Bank Glazing Ltd. | Glazier | 8 Comely Bank Ave | Daily Open 24 hours |
| Commercial Temperature Solutions Ltd | Air conditioning contractor | The Granary, 4 West Lodge, Gogarmuir Road | Daily Open 24 hours |
| Complete Auto Battery Jump Start Services | Auto electrical service | 37 Assembly St | Mon Open 24 hours |
| Connect Spinal Health - Chiropractor, Leith | Chiropractor | 56 Queen Charlotte St | Mon 08:00–19:30 |
| Contract Heating | Gas engineer | 2B Bankhead Crossway S | Mon–Fri 09:00–17:00 |
| Cork & Cask | Beer shop | 136 Marchmont Rd | Mon–Sat 10:00–20:00 |
| Corstorphine Gas Services Edinburgh | Central heating service | 100F Saughton Rd N | Mon–Fri 08:00–16:30 |
| Corstorphine Post Office | Shipping service | 119B St John's Rd | Tue 07:00–19:00 |
| Cozy Digital Limited | Internet marketing service | 30 Bankhead Dr | Mon–Thu 09:00–17:30 |
| Craigentinny Avenue Post Office | Post office | 2 Craigentinny Ave | Tue 06:00–22:00 |
| CrownCouture Hair Enhancement Studio | Hair extension technician | 10 William St | Tue–Fri 09:30–16:00 |
| Cruise Technologies | Software company | 44 Hanover St | Mon–Fri 08:00–18:00 |
| Culbertson Renewables Ltd | HVAC contractor | 13a Bridge St | Mon 08:00–16:30 |
| Cut Above Leith | Lawn care service | 26 Tolbooth Wynd | Thu 08:00–17:00 |
| Cyrenians Felix Central & South East Scotland | Training centre | 5A Seafield Way | Thu 07:00–16:00 |
| D & A Lawrence Ltd | Window cleaning service | 3b Ormiston Ter | Mon 08:00–17:00 |
| Daddy Daycare Newhaven | After-school programme | Annex building Heart of Newhaven, 4-6 Main Street | Mon–Fri 14:00–18:00 |
| Dales Marine Services | Shipyard | Leith, Edinburgh EH6 7DR | Daily Open 24 hours |
| Dance Base, Scotland's National Centre for Dance | Dance school | 14-16 Grassmarket | Mon–Fri 09:30–21:00 |
| Dave Reubens - The Magician | Party equipment rental service | 6/6 Firrhill Loan | Daily Open 24 hours |
| Davison Menswear and Kilt Hire | Men's clothes shop | 31- 33 Bruntsfield Pl | Mon Open 24 hours |
| Deacon's House Cafe | Tea room | 304 Lawnmarket | Daily 09:00–16:00 |
| Deaf Action | Deaf service | 49 Albany St | Mon–Fri 09:00–17:00 |
| Digby Brown Solicitors | Personal injury attorney | 160 Causewayside | Mon–Fri 09:00–17:00 |
| Dingbro Ltd | Auto parts store | Unit 13, bankhead industrial estate, 36 Bankhead Dr | Mon–Fri 08:30–17:30 |
| Direct Scaffolding | Scaffolding service | 1 Hyvot Terrace | Mon 07:30–18:00 |