- Jo-Mar Factory Inc
- Joe Parcella Exxon
- Joe Pirrone Transmissions
- Joe's Auto Body
- Joe's Hardwood Floors Inc
- Joe's Printing House
- John Curry Inc
- John De Nofa & Sons
- John Devine Plumbing & Heating
- John F Brennan Inc
- John Komada & Co
- John M King Transportation Inc
- John Mc Kairnes Plumbing & Htg
- John T Lilley DDS
- John V Potero Enterprises Inc
- John's Barber Shop
- John's Hardwood Floor
- John's Real Estate
- Jomar
- Jon's
- Jonas Security Alarm Co
- Joseph A Quinn Inc
- Joseph Elia
- Joseph Lee & Son Inc
- Joseph Mc Avinney
- Joseph Sporting Goods
- Joy's Fashion & Perfume
- Joyful Life United Pent Church
- Juliano's Deli
- Julio Perez Grocery
- Juniata Beer Distributors
- Juniata Family Practice
- Juniata Golf Club
- Juniata Hair Fashions
- Juniata Insurance Inc
- Juniata Meats Inc
- Juniata Park Boys & Girls Club
- Juniata Park Congregation
- Juniata Park United Methodist
- Juniata Super Mart
- Juniata Tailor
- Juniata Tax Svc
- Juniata Travel
- K & B Autocraft
