| Gucci | Watch shop | 15 High Street Upper | Mon–Fri 10:00–21:00 |
| Hallam Medical | Nursing agency | 2nd Floor, Westfield House, 60 Charter Row | Daily Open 24 hours |
| Harron Homes - Laughton Gate | Housing development | Oldcotes Rd | Mon 10:30–17:30 |
| HazeHut | Tobacco shop | 305 Ecclesall Rd | Daily 09:00–21:00 |
| Healing Space Sheffield | Massage therapist | 238 London Rd | Mon–Sat 10:00–20:30 |
| Henry-May | Sewing company | 197 Leverton Gardens | Daily 08:00–20:00 |
| High Green Development Trust | Community centre | The Campus, Pack Horse Ln | Daily 08:00–18:00 |
| Hub. | Record shop | 308 Sharrow Vale Rd | Tue–Sat 10:00–18:00 |
| Hutton's Buildings | Student halls | 146 West St | Daily Open 24 hours |
| I L❤️Ve Sweets | Sweet shop | 26, East Mall, Crystal Peaks Shopping Mall and Retail Park, Eckington Way | Mon–Sat 09:00–17:00 |
| Ice Sheffield | Ice skating rink | IceSheffield, 23 Coleridge Rd | Daily 06:00–01:00 |
| Icons & Machines | Public relations firm | Carver House, Carver St | Daily Open 24 hours |
| In Time | Watch repair shop | Ground Floor, Central Atrium | Mon–Sat 09:00–17:30 |
| Jb Plates | Car body parts supplier | 11 Ryton Rd | Daily Open 24 hours |
| Jessop Wing - Maternity | Maternity hospital | Tree Root Walk | Daily Open 24 hours |
| Jonathan Wilson Boat Builders Limited | Boat builders | Victoria Boatyard, Sussex St | Mon–Thu 07:00–18:00 |
| JORO Restaurant | Fine dining restaurant | JÖRO OUGHTIBRIDGE MILL, Main Rd | Wed–Sat 09:00–23:30 |
| Jubilee College - Sheffield | College | C/O, Kenwood Hall Hotel & Spa, Kenwood Rd | Daily 09:00–18:00 |
| Juiceway | Juice bar | Staniforth Rd | Mon–Tue 11:00–00:00 |
| Jumaira Spice | Kashmiri restaurant | 1 The Common | Mon–Thu 17:00–23:00 |
| Kebabish Original (Sheffield) | Pakistani restaurant | 100-104 London Rd | Mon–Fri 16:30–23:30 |
| Kelham Island Museum | Heritage museum | Alma St | Tue 10:00–16:00 |
| Kenny's Buy Sell Trade | Video game shop | Unit 1, Rear Of, 68 Laughton Rd | Mon–Fri 09:00–16:00 |
| Kerry Moss Financial Services Ltd | Mortgage broker | 6 Pennyholme Cl | Daily Open 24 hours |
| KHaine Photography Ltd | Photographer | 51 Ecclesfield Rd | Sat–Sun 09:30–15:30 |
| Khushi - Pakistani Restaurant | Pakistani restaurant | 798 Chesterfield Rd | Daily 17:00–23:00 |
| Kilner Way Retail Park | Shopping centre | Kilner Way | Mon–Sat 08:00–20:00 |
| Kings Vapes and American Sweets | Smoke shop | 958 Gleadless Rd | Mon–Fri 07:00–22:00 |
| Kiveton Charcoal Grill | Kebab shop | 2 Wales Rd | Daily 17:00–23:00 |
| Kiveton Turf LTD | Turf and soil supplier | 86 School Rd | Mon–Fri 08:00–20:00 |