| davidandgoliath (El Segundo, CA) |
| DEEP Design (Atlanta, GA) |
| Defrost Design (Pleasant Ridge, MI) |
| *Demo Design (Brooklyn, NY) |
| Design Army (Washington DC) |
| Design for Social Impact (Philadelphia, PA) |
| Design Method of Operation (Millbrook, NY) |
| Design Pony (Portland, OR) |
| Digital Kitchen (Chicago, IL. New York, NY. Seattle, WA.) |
| Digitas (Boston, MA. Chicago, IL. Detroit, MI. New York, NY) |
| Domani Studios (New York, NY) |
| *Dope Pope (New York, NY) |
| dotcog (London, UK) |
| Draftfcb (Chicago, IL. New York, NY. San Francisco, CA) |
| Draplin Design Co. (Portland, OR) |
| Duffy & Partners (Minneapolis, MN) |
| Dziurman Dzign Inc. (Clawson, MI) |