| Menehune Plumbing | Menehune Plumbing | — | (808) 822-5220 | HVAC | Kapaʻa · Kauai County | — | — |
| Merrell Bros INC | Merrell Bros INC | — | (800) 663-8830 | Other | Honolulu · Honolulu County | — | — |
| Metal Roof Pros | Metal Roof Pros | info@ndiscovered.com | — | Other roofers | Koloa · Kauai County | — | — |
| Metta Electric | Metta Electric | — | (808) 500-3646 | Electricians | Kahului · Maui County | — | — |
| Metzler Contracting Co LLC | Metzler Contracting Co LLC | — | (808) 889-0581 | Other roofers | Hawi · Hawaii County | — | — |
| Mf Construction INC | Mf Construction INC | contact@mf-construction.com | (808) 268-9284 | GC, remodel, ADU | Kula · Maui County | — | — |
| Michael D Barton | Michael D Barton | support@michaeldbarton.com | — | GC, remodel, ADU | Laupahoehoe · Hawaii County | — | — |
| Michael G Chun | Michael G Chun | michael.chun03@gmail.com | — | Windows, patio, painters | Pearl City · Honolulu County | — | — |
| Mid Pac Services LLC | Mid Pac Services LLC | %20build@midpacservices.com | (808) 756-5201 | GC, remodel, ADU | Kamuela · Hawaii County | — | — |
| Mid-Pacific Pest Control | Mid-Pacific Pest Control | info@mauipestcontrol.com | (808) 249-2233 | Pest, tile roofs | Wailuku · Maui County | — | — |
| Midnight Tint Kona & Ppf | Midnight Tint Kona & Ppf | — | (808) 495-4425 | Windows, patio, painters | Holualoa · Hawaii County | — | — |
| Midnight Tinting | Midnight Tinting | — | (808) 479-9488 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Mike Stevens Roofing | Mike Stevens Roofing | — | (808) 635-1205 | Other roofers | Princeville · Kauai County | — | — |
| Mjr Environmental & Restoration | Mjr Environmental & Restoration | — | (808) 866-7658 | Restoration | Wailuku · Maui County | — | — |
| Mk Flooring LLC | Mk Flooring LLC | lee@mkflooring.com | — | Other | Waipahu · Honolulu County | — | — |
| Mo's Painting LLC | Mo's Painting LLC | — | (509) 431-0054 | Windows, patio, painters | Mililani · Honolulu County | — | — |
| Modbox LLC | Modbox LLC | info@modbox.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Modern Flooring LLC | Modern Flooring LLC | kamil@modern-flooring.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Modern HawaiiProtected | Modern Hawaii | — | (808) 640-8924 | Tile roofers | Kailua-Kona · Hawaii County | — | — |
| Modern Renovations Hawaii LLC | Modern Renovations Hawaii LLC | bryce808renovate@gmail.com | (808) 489-0843 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Modtech Solutions LLC | Modtech Solutions LLC | info@modtechsolutions.com | (808) 204-2384 | Alarm and generators | Aiea · Honolulu County | — | — |
| Mokihana Pest Control INC | Mokihana Pest Control INC | — | (808) 246-6654 | Pest, tile roofs | Lihue · Kauai County | — | — |
| Moku Builders LLC | Moku Builders LLC | — | (808) 281-6195 | GC, remodel, ADU | Lahaina · Maui County | — | — |
| Mokupuni Pool Service & Repair | Mokupuni Pool Service & Repair | — | (808) 745-4442 | Pool | Ewa Beach · Kalawao County | — | — |
| Mollerup Glass Company | Mollerup Glass Company | quality@mollerupglass.com | (801) 397-1177 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Molokai Island Properties | Molokai Island Properties | — | (808) 646-1332 | Property managers | Maunaloa · Kalawao County | — | — |
| Molokai Vacation Properties | Molokai Vacation Properties | dayna.harris@icloud.com | (808) 658-1717 | Property managers | Kaunakakai · Kalawao County | — | — |
| Monarch INC | Monarch INC | support@monarch.com | — | GC, remodel, ADU | Mountain View · Hawaii County | — | — |
| Moss & Associates LLC | Moss & Associates LLC | contact@mossassociates.com | (905) 655-0119 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Mpi Security | Mpi Security | — | (808) 493-2761 | Alarm and generators | Hilo · Hawaii County | — | — |
| Mrc Roofing LLC | Mrc Roofing LLC | — | (808) 842-4464 | Other roofers | Honolulu · Honolulu County | — | — |
| Murakami Roofing LLC | Murakami Roofing LLC | info@murakami.local | (808) 348-8270 | Other roofers | Kaneohe · Honolulu County | — | — |
| Murphy Electric | Murphy Electric | — | (808) 264-5812 | Electricians | Lahaina · Maui County | — | — |
| N Nobriga Fencing INC | N Nobriga Fencing INC | info@nnobrigafencing.com | — | Windows, patio, painters | Hilo · Hawaii County | — | — |
| Nan INC | Nan INC | — | (808) 842-4929 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Nash Dreiling - Maui Property Managers | Nash Dreiling - Maui Property Managers | — | (808) 757-6774 | Property managers | Wailea · Maui County | — | — |
| Nathan Wood General Contractor LLC | Nathan Wood General Contractor LLC | — | (808) 821-9564 | GC, remodel, ADU | Lihue · Kauai County | — | — |
| Natural Salt Pools LLC | Natural Salt Pools LLC | nspcurtis@gmail.com | (808) 255-7665 | Pool | Kailua · Honolulu County | — | — |
| Neal Fineman Property Management | Neal Fineman Property Management | — | (808) 353-4732 | Property managers | Honolulu · Honolulu County | — | — |
| Neighborhood Power Corporation | Neighborhood Power Corporation | — | (866) 871-5423 | Electricians | Kahului · Maui County | — | — |