| Johnson Motors of Menomonie Service Center | Auto repair shop | 1603 US-12 | Mon–Fri 8 AM–6 PM |
| Johnson Tractor - Menomonie | Farm equipment supplier | E6121 563rd Ave | Mon–Fri 7:30 AM–5 PM |
| K&B Toys and Collectibles | Toy store | 1214 N Broadway St N | Tue–Sat 10 AM–7 PM |
| Kado & Associates, Inc. | Insurance agency | 718 N Broadway St | Mon–Thu 8 AM–5 PM |
| Kado Gallery | Screen printing shop | 712 N Broadway St | Mon–Fri 8:30 AM–4:30 PM |
| Kailey Stencil Photography | Photographer | 2819 Knapp St | Mon–Fri 8 AM–5 PM |
| Kaleidoscope Peer Recovery Center | Mental health service | 809 Wilson Ave | Mon–Fri 7 AM–11 PM |
| Kayres Counseling, LLC. | Counselor | 392 Red Cedar St #3B | Mon–Fri 9 AM–5 PM |
| Keyes Chevrolet | Concessionnaire Chevrolet | 303 Oak Ave | Mon–Thu 8 AM–6 PM |
| Keyes Chevrolet Service | Auto repair shop | 303 Oak Ave | Mon–Fri 8 AM–5 PM |
| Kidz Adventure Zone | Day care center | E4699 430th Ave | Mon–Fri 6 AM–6 PM |
| Krumm Exteriors | Roofing contractor | 1700 Tainter St # D | Fri 8 AM–4 PM |
| La Veracruzana | Mexican restaurant | 2521 Hils Ct B | Mon–Sat 10 AM–8 PM |
| Lake Menomin Park | Park | 2997 Domain Dr | Daily 6 AM–10 PM |
| Lancer Group Properties | Property management company | 1820 Stout Rd | Fri 8:30 AM–4:30 PM |
| Leedstone Inc | Dairy farm equipment supplier | 1720 Freitag Dr | Fri 8 AM–5 PM |
| Leerburg | Dog trainer | 406 Technology Dr W | Mon–Fri 8 AM–4 PM |
| Legendary Plumbing | Plumber | E3802 550th Ave | Fri 7 AM–5 PM |
| Leipnitz Dental: Dr. Todd Leipnitz | Dentist | 2521 Broadway St S #1 | Mon–Wed 7:30 AM–4:30 PM |
| Lentz Fertilizer Inc | Fertilizer supplier | E6604 629th Ave | Mon–Fri 7 AM–4 PM |
| Lindstrom Equipment Inc | Farm equipment supplier | 801 County Rd B | Mon–Fri 7:30 AM–5 PM |
| Lion Ted Wiehe Nature Trail | Hiking area | Game Park Rd | Daily 7 AM–10 PM |
| Lipke’s Detailing and Polishing | Car detailing service | N7063 554th St | Daily 8 AM–7 PM |
| Little Sprouts Academy Menomonie | Day care center | 425 Technology Dr E | Fri 6 AM–6 PM |
| Log Jam | Bar & grill | 709 Broadway St S | Mon–Fri 11 AM–10 PM |
| Love Church | Church | 710 Main St E | Sun 10 AM–11:30 AM |
| Love's Travel Stop | Truck stop | 5930 Badger Dr | Daily Open 24 hours |
| Love's Truck Care | Truck repair shop | 5930 Badger Dr | Daily 6 AM–11 PM |
| Loyal Order of Moose | Fraternal organization | 720 19th Ave E | Tue 6 PM–10 PM |
| LSI Property Management | Property management company | 1311 N Broadway St | Fri 7:30 AM–12 PM |
| Lucette Brewing Company | Brewery | 910 Hudson Rd | Fri 11:30 AM–9 PM |
| Lucette Event Pavilion | Wedding venue | 910 Hudson Rd | Mon–Thu 4:30 PM–9 PM |
| M.A.S Solutions | General contractor | 300 Wilson Ave W | Tue 9 AM–6 PM |
| MAC Automotive | Auto repair shop | N3651 WI-25 | Mon–Fri 7:30 AM–5 PM |
| Machine Shed Sports & Fitness | Gym | 2021 Broadway St S | Fri 6 AM–6 PM |
| Mainstream Boutique Menomonie | Boutique | 1506 9th St E | Mon–Thu 10 AM–6 PM |