| Name | Phone | Category |
| Odom Corporation, The | (907)272-8511 | Restaurants, Caterers, Coffee & Beverages |
| Office Depot | (907)562-3993 | Retail |
| Office of the Governor, Anchorage | (907)269-7450 | Services |
| Office of the Mayor | (907)343-7100 | Services |
| Office of the Senator | (202)224-6665 | Services |
| Office Products Services | (907)562-1320 | Retail |
| Phil Okeson | (907)249-5141 | Past Presidents |
| Older Person's Action Group | (907)276-1059 | Non-Profit Organizations, Associations |
| Olgoonik Technical Services, LLC | (907)562-8728 | Services |
| One Hour Fireweed Drycleaning | (907)272-3478 | Services |
| Operating Engineers Local 302 | (907)561-5288 | Services |
| OPTI Staffing Group | (907)677-9675 | Services |
| Oriental Healing Arts School of Massage, The | (907)279-0135 | Services |
| ORSO | (907)222-3232 | Restaurants, Caterers, Coffee & Beverages |
| Orthopedic Physicians Anchorage | (907)562-2277 | Professional |
| Outback Steakhouse | (907)562-8787 | Restaurants, Caterers, Coffee & Beverages |
| OutCast! Productions, LLC | (907)440-4252 | Professional |
| Over the Rainbow Toys | (907)522-8184 | Retail |
| Oxford Assaying & Refining Corp. | (907)561-5237 | Services |
