Added decisive design competitions:
 

To learn more about a particular Competition, checkout the website link.
Medals CompetitionRestaurant CompetitionSign CompetitionList Competition
Winners Training CompetitionWomens' Fashion CompetitionInspiration CompetitionPro Competition
Web CompetitionConferences CompetitionOf The Century CompetitionProduct Competition
3D CompetitionBlue Graphics CompetitionCar CompetitionUtility Car Competition
Content CompetitionCulinary CompetitionDesigner Goods CompetitionHotels Competition
Red CompetitionSound CompetitionStrategic CompetitionTextile Competition
Tourism CompetitionYoung CompetitionBusiness CompetitionInterior Furniture Competition
Asian CompetitionSpacecraft CompetitionResearch CompetitionItalians Competition
Faculty CompetitionCollege of Design CompetitionGreatest Design Works CompetitionArt Works Competition
Convention Centers CompetitionFunctional Furniture CompetitionElectronic Goods CompetitionArt Gallery Competition
Additionally see: Listing of Design Competition | Main Page