- Do-Co Ceramics
- Docs Against Donor Disparities
- Doctor's Center Manati
- Doctor's Hospital at Renaissance
- Doctors Community Hospital
- Doctors Hospital
- Doctors Hospital - OhioHealth
- Doctors Hospital of Augusta
- Doctors Hospital of Laredo
- Doctors Hospital of Sarasota
- Doctors Medical Center
- Doctors' Center Hospital Bayamon
- Doctors' Center Hospital Manati
- Doctors' Center Hospital San Fernando de la Carolina
- Doctors' Center Hospital San Juan
- Docucon Imaging Services
- Document Solutions Group, Inc.
- Dodge County Hospital
- Dodge, Chrysler, Jeep of Vacaville
- Dodgen Industries, Inc.
- Dofasco Tubular Product
- Dole Food
- Dollar Bank
- Dollar General
- Dominican College
- Dominican Hospital
- Dominion
- Dominion Partners, L.C.
- Dominion Virginia Power
- Don Chalmers Ford
- Don Gasgarth's Charlotte County Ford
- Don Pablo's Mexican Kitchen
- Don's Barber Shop
- Dona Ana County
- Donaldson Company, Inc.
- Donate Life America
- Donate Life Arizona
- Donate Life Arkansas
- Donate Life California
- Donate Life Colorado
- Donate Life DC
- Donate Life Georgia
- Donate Life Illinois
- Donate Life Indiana
- Donate Life Iowa
- Donate Life Kentucky
- Donate Life Louisiana
- Donate Life Maryland
- Donate Life Minnesota
- Donate Life Mississippi