| Advanced Electrical Solutions | Advanced Electrical Solutions | — | (808) 652-6106 | Electricians | Kapaʻa · Kauai County | — | — |
| Advanced Home Services | Advanced Home Services | advancedhomeservicesmaui@gmail.com | (808) 757-6522 | Windows, patio, painters | Makawao · Maui County | — | — |
| Advanced Roofing Solutions Inc. | Advanced Roofing Solutions Inc. | — | (808) 270-9256 | Other roofers | Kahului · Maui County | — | — |
| Adx Construction Inc. | Adx Construction Inc. | armando@adxconstruction.com | (808) 344-8892 | GC, remodel, ADU | Kihei · Maui County | — | — |
| Affiliated Construction LLC | Affiliated Construction LLC | — | (808) 676-5542 | GC, remodel, ADU | Waipahu · Kalawao County | — | — |
| Affordable Appliance | Affordable Appliance | — | (808) 212-9612 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Africa Roofing Hawai‘i Usa | Africa Roofing Hawai‘i Usa | — | (808) 960-5152 | Other roofers | Kailua-Kona · Hawaii County | — | — |
| Agency Rentals | Agency Rentals | — | (808) 944-9000 | Property managers | Honolulu · Honolulu County | — | — |
| Agt Construction LLC | Agt Construction LLC | admin@agtconstruction.com | (808) 638-9444 | GC, remodel, ADU | Haleiwa · Honolulu County | — | — |
| Ahona Raingutters LLC | Ahona Raingutters LLC | ken@ahonaraingutters.com | — | Other | Hilo · Hawaii County | — | — |
| Aina Ola LLC | Aina Ola LLC | cs@ainaola.net | — | GC, remodel, ADU | Kailua-Kona · Hawaii County | — | — |
| Air Central LLC | Air Central LLC | jesse@aircentral.com | (763) 208-2840 | HVAC | Honolulu · Honolulu County | — | — |
| Air Conditioning Experts LLC | Air Conditioning Experts LLC | airconditioningexpertshi@gmail.com | (808) 732-2236 | HVAC | Honolulu · Honolulu County | — | — |
| Air Engineering Company Inc. | Air Engineering Company Inc. | info@airengineering.com | (800) 558-4318 | HVAC | Honolulu · Honolulu County | — | — |
| Air Kauai | Air Kauai | — | (808) 246-4666 | Alarm and generators | Lihue · Kauai County | — | — |
| Air Masters INC | Air Masters INC | info@air-masters.com | (808) 848-2473 | HVAC | Honolulu · Honolulu County | — | — |
| Air Source Air Conditioning | Air Source Air Conditioning | airsourceac@yahoo.com | (808) 300-4651 | HVAC | Honolulu · Honolulu County | — | — |
| Akamai Glass Company INC | Akamai Glass Company INC | customerservice@akamaiglass.com | (808) 306-7222 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Akamai Pest Management Inc. | Akamai Pest Management Inc. | — | (808) 243-7378 | Pest, tile roofs | Wailuku · Maui County | — | — |
| Akimoto Construction INC | Akimoto Construction INC | — | (808) 746-5504 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Akinaka Construction INC | Akinaka Construction INC | malia@akinakaconstruction.com | (808) 572-1494 | GC, remodel, ADU | Makawao · Maui County | — | — |
| Alaka'i Mechanical Corporation | Alaka'i Mechanical Corporation | — | (808) 834-1085 | HVAC | Honolulu · Honolulu County | — | — |
| Alaka'i Services And Roofing INC | Alaka'i Services And Roofing INC | — | (808) 492-0633 | Other roofers | Kaneohe · Kalawao County | — | — |
| Alan Shintani INC | Alan Shintani INC | — | (808) 841-7631 | GC, remodel, ADU | Waipahu · Honolulu County | — | — |
| Alani Bulldozing LLC | Alani Bulldozing LLC | — | (808) 987-1939 | Other | Pahoa · Hawaii County | — | — |
| Alarm Hawaii | Alarm Hawaii | — | (808) 791-4357 | Alarm and generators | Kapolei · Kalawao County | — | — |
| Alert Alarm Of Hawaii | Alert Alarm Of Hawaii | — | (808) 521-5000 | Alarm and generators | Honolulu · Honolulu County | — | — |
| Alert Alarm Of Hawaii | Alert Alarm Of Hawaii | — | (808) 935-5223 | Alarm and generators | Hilo · Hawaii County | — | — |
| Alert Alarm Of Hawaii | Alert Alarm Of Hawaii | — | (808) 245-4243 | Alarm and generators | Lihue · Kauai County | — | — |
| Ali'i Beach Rentals | Ali'i Beach Rentals | — | (800) 651-5657 | Property managers | Honolulu · Honolulu County | — | — |
| Ali'i Security Systems INC | Ali'i Security Systems INC | — | (808) 847-6777 | Alarm and generators | Honolulu · Honolulu County | — | — |
| Ali'i Windows | Ali'i Windows | — | (808) 652-8198 | Windows, patio, painters | Kilauea · Kauai County | — | — |
| Alii Bee Removal. | Alii Bee Removal. | — | (808) 250-9794 | Pest, tile roofs | Kula · Maui County | — | — |
| Alii Wiring LLC | Alii Wiring LLC | — | (808) 386-2004 | Electricians | Honolulu · Honolulu County | — | — |
| All American Painting INC | All American Painting INC | — | (949) 679-5800 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| All G Electric LLC | All G Electric LLC | info@allgelectric.com | (808) 531-2554 | Electricians | Kailua · Honolulu County | — | — |
| All Island Rollshutter LLC | All Island Rollshutter LLC | — | (808) 833-3355 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| All Out Painting LLC | All Out Painting LLC | — | (808) 357-9756 | Windows, patio, painters | Kihei · Maui County | — | — |
| All Valley Home Inspections | All Valley Home Inspections | — | (808) 866-8367 | Inspectors | Kihei · Maui County | — | — |
| All Weather Waterproofing INC | All Weather Waterproofing INC | info@allweatherwaterproofing.com | — | Other roofers | Honolulu · Honolulu County | — | — |