- Life Care Holdings LLC
- Lifefund
- Lifetouch National Schl Studio
- Lighthouse Church
- Lightner Law Offices
- Lilly David
- Linda H Schock
- Lisa Brandolino
- Little Lehigh Fly Shop
- Little Lehigh Vascular Lab
- Little People Day Care School
- Litz Law Offices
- Loco Motion Motors
- London Salon
- Lorraine M Dorfman PHD
- Love Homes
- Lukeart Auto Sales
- Luminaire Testing Laboratory
- LVHC Assoc
- LVPG General Surgery
- Lynn's Nails
- M & A Mini Market
- M & M Prosthetics & Orthotics
- M & R Computing
- M & T Bank
- M & T Bank
- M Osaic
- M P Nursing Apparel
- M P Uniform & Supply Co
- MAACO Auto Painting & Bodywork
- Mac Donald Chiropractic Ctr
- Machemer Contracting Inc
- Macungie Dental Assoc