Danube (a river in Europe; flowing 2,850 kilometers from the confluence of the Breg and Brigach at Donaueschingen, Germany, through Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine, into the Black Sea)
Dauphin (a city in Manitoba, Canada); Dauphin (a commune of Alpes-de-Haute-Provence department, Provence-Alpes-Côte d'Azur region, France); Dauphin (a borough in Dauphin County, Pennsylvania, United States)
De Lesseps: De Lesseps (a lake in Ontario, Canada; in full, lac De Lesseps); De Lesseps: De Lesseps (a river in Ontario, Canada; in full, rivière De Lesseps)
Deauville (a coastal commune in Honfleur-Deauville canton, Lisieux, Calvados department, Côte Fleurie, Lower Normandy, Normandy, France); Deauville (a district, a former municipality of Brompton-Rock Forest-Saint-Élie-Deauville borough, Sherbrooke, Quebec, Canada)
Debaltseve (a village in Vasylkivka settlement hromada, Synelnykove Raion, Dnipropetrovsk Oblast, Ukraine); Debaltseve (a city, the administrative centre of Debaltseve urban hromada, Horlivka Raion, Donetsk Oblast, Ukraine, founded as a railway station in 1878, controlled by the Donetsk People’s Republic since the conclusion of the Battle of Debaltseve in February 2015)