| DAF Fishlake Commercial Motors | Truck dealer | Jubilee Bridge Works, Selby Rd | Mon 08:00–21:00 |
| Danum Gallery, Library and Museum | Museum | Danum Gallery, Library and Museum, Waterdale | Fri 10:00–17:00 |
| Dario's Ristorante | Italian restaurant | Doncaster Rd | Tue 16:00–22:00 |
| Davie Fine Art | Galería de arte | 7 & 9 Castlegate | Tue–Sat 10:00–17:00 |
| Davison and Co | Chartered accountant | Manor View Chambers, 294-296 Askern Rd | Mon–Fri 09:00–17:00 |
| Davock Kitchens Ltd | Kitchen renovator | Wheatley Hall Rd | Fri 09:00–17:00 |
| DBG Group Ltd | Property developer | Grey Friars' Rd | Mon–Fri 09:00–17:00 |
| DBS Construction Ltd | Road construction company | Bankwood Lane Industrial Estate, Unit 18 & 19, Bankwood Lane | Mon–Fri 07:30–16:30 |
| Dcs Event Services | Exhibition planner | Unit X08, Wheatley Hall Rd | Daily Open 24 hours |
| Dedicated Home Cinema Limited | Home cinema installation | The Old Station Yard, Station Rd | Mon–Sat 09:00–17:00 |
| Denaby Main Post Office | Post office | 14 Grays Ct | Mon–Fri 09:00–17:00 |
| Denaby Medical Practice | Pharmacy | Church Rd | Mon 08:00–18:00 |
| Derek Lewis Ltd | Road construction company | ❒Balby, Carr Bank | Mon–Fri 08:00–16:30 |
| Design 3 Architecture & Urban Design ltd. | Architectural designer | 2 Buttercross Ct | Mon–Fri 09:00–16:00 |
| Direct Plumbing & Heating Services | Central heating service | 22 St David's Dr | Thu 08:00–21:00 |
| Discover Financial Ltd | Financial advisor | 228 Sandringham Rd | Fri 09:00–17:00 |
| DJB Installs Ltd | Insulation contractor | 2 Fifth Ave | Mon–Tue 09:00–17:00 |
| DLZ Performance (Jaggarage LTD) | Vehicle repair shop | Unit 12A, 360 Business Park, Askern Rd | Mon–Fri 09:00–17:00 |
| Dn1 Kitchen - Deli | Delicatessen | 3 High Fisher Gate | Tue–Sat 08:30–17:30 |
| Dobson and Hodge Ltd | Insurance agency | 11-15 Thorne Rd | Thu 08:45–17:00 |
| Don Industrial Supplies | Fastener supplier | Unit 7, Altamode Complex, Sandall Stones Rd | Mon–Thu 08:30–16:00 |
| Don Valley Cycles | Bicycle shop | 1 Danum Rd | Tue–Fri 09:30–17:30 |
| Doncaster College | University | The Hub, Chappell Dr | Mon–Thu 08:00–20:00 |
| Doncaster Council | Council | Civic Office, Waterdale | Mon–Fri 08:30–17:00 |
| Doncaster Dog Walking | Dog walker | 52 Woodlands Rd | Sat 07:00–19:00 |
| Doncaster Gas Products Ltd | Industrial gas supplier | Unit 7, cherry tree industrial estate, Cherry Tree Rd | Mon–Fri 09:00–16:00 |
| Doncaster Kitchen & Bathroom Studio | Bathroom renovator | 7, Kingsway House, Hall Gate | Mon–Fri 09:30–17:00 |
| Doncaster Martial Arts Centre | Martial arts school | 76a Baxter Ave | Mon 09:30–11:30, 16:00–21:00 |
| Doncaster Royal Infirmary | General hospital | Thorne Rd | Daily Open 24 hours |
| Doncaster Skate Co-operative | Skate park | Unit 3 Marsh Gate | Tue 16:00–21:00 |