A
- AA B Federal Credit Union
- AA Balanced Focus, Inc.
- AA.T.C.S., P.L.C.
- AAdams Electric
- AAdler's Landscape Nursery, Inc.
- AAdvanced Regional Center for Orthopedics & Podiatry
- AAdvanced Vein Care
- AAdvantage Resource Group
- AAerial Communications
- AAerotek
- AAircon Engineering Inc.
- AAl's Tavern, Inc.
- AAlleghenies United Cerebral Palsy
- AAllegheny Advanced Dermatology Center
- AAllegheny Lutheran Social Ministries
- AAllegheny Mountains Chapter of Safari Club International
- AAllegheny Orthodontic Associates
- AAllegheny Orthotics & Prosthetics
- AAllegheny Pain Management, P.C.
- AAllegheny Ridge Corporation
- AAllegheny Ridge Wind Farm, LLCEnergy
- AAllegheny Supply and Maintenance Co., Inc.
- AAllegheny Trucks, Inc.
- AAllegro Luxury Vacations/ Magic Family Travel
- AAllegro Restaurant
- AAllied Mechanical & Electrical
- AAllison Herbaugh LLC
- AAllstate - The Gibson Agency
- AAlternative Community Resource Program, Inc. (ACRP)
- AAlto Markets
- AAlto Reste Cemetery, Inc.
- AAltoona Area Business Community
- AAltoona Area Public Library
- AAltoona Area School District
- AAltoona Arthritis and Osteoporosis Center
- AAltoona Beauty School
- AAltoona Center for Nursing Care
Altoona Community TheatrePerforming Arts- AAltoona Curve Baseball
- AAltoona First Savings Bank
- AAltoona Grand Hotel
- AAltoona Honda
- AAltoona Housing Authority
- AAltoona LaunchBox Supported by the Hite Family
- AAltoona Lung Specialists
- AAltoona Mirror
- AAltoona Ophthalmology Associates
- AAltoona Pipe & Steel Supply Company
- AAltoona Shoe Fly Stores
- AAltoona Symphony Orchestra
Altoona Water Authority
Altoona-Blair County Airport- AAMED
- AAmerican Cancer Society
- AAmerican Eagle Paper Mills
- AAmerican Rescue Workers, Inc.
- AAmerican Roofing, Inc.
- AAmeriprise Financial Services, LLC
- AAmerway, Inc.
- AAmtran
- AAngelo Pacifico & Sons, Inc.
- AAnswerLinks, Inc.
- AAntis Township
Appalachia Intermediate Unit 8- AAppalachian Running Company
- AARC Federal Credit Union
- AARM Group Inc.
- AARROW Land Solutions, LLC
- AArrows Christian Academy
- AArthur J. Gallagher & Co.
- AArtsAltoona
- AArya Yoga Studio
- AAseraCare Hospice of Altoona
- AAtlas Therapy
- AAustin's Texas Hot Dogs, Inc.