- A-1 Roofing Of Lancaster
- AAA Central Penn Road Svc
- AAA Insurance
- AAA Lancaster County
- Aaron Studios Hair/Nail Care
- Aaron Studios Hair/Nail Care
- Abbey Book & Gift Shop
- Abbeyville Road Christian Chrh
- ABC Appliance
- Abercrombie
- Abercrombie & Fitch
- Abram G Barley Jr
- ABS Inc
- Absolute Pilates
- Accu-Tax & Bookkeeping Svc
- Accu-Tool & Machine Co
- Accurate Automotive
- Ace Hauling Svc
