- Margellis Edelstein
- Margherita Pizzeria
- Margolis Edelstein
- Margolis Edelstein
- Margot & Camille Optique LLC
- Margret Cedrone Jewelers
- Maria Massaro Jewelers
- Marino Studios
- Mario Puca Jewelers
- Maritime Exchange For Delaware
- Mark Adams
- Mark Adams
- Mark N Cohen
- Mark N Cohen
- Mark Pecht
- Markakis George Restaurant
- Market At The Hopkins House