Zelenogradsk (; Cranz; Lithuanian and Old Prussian: Krantas) is a town and the administrative center of Zelenogradsky District in Kaliningrad Oblast, Russia, located north of Kaliningrad, on the Sambian coastline near the Curonian Spit on the Baltic Sea. Population:
In its heyday, Zelenogradsk (as Cranz) was a popular seaside resort on Germany's eastern Baltic coast, comparable to Bognor Regis in England. However, at the end of World War II, the Soviets took over the town, and much of its tourist traffic has been diverted to nearby Svetlogorsk.
The site of today's Zelenogradsk was originally an Old Prussian fishing village, in the proximity of Kaup, a Prussian town on the coast of the Baltic Sea in the Viking era. The area became controlled by the Teutonic Order and settled with Germans. The German name Cranz, originally Cranzkuhren, derives from the Old Prussian word krantas, meaning "the coast". For most of its history, it remained a small village.
From the 18th century it formed part of the Kingdom of Prussia, and from 1871 it was also part of Germany, within which it was administratively located in the province of East Prussia. During the 19th century, Cranz became the primary seaside resort for the Kingdom of Prussia on the East Prussian coastline, especially after the construction of a railway line connecting it with Königsberg (now Kaliningrad) in 1885. From 1816 to 1895, it was known as das königliche Bad, or "the royal bathing resort". In the late 19th century, the settlement was inhabited by more than 1,000 people, mainly living off tourism, however, the fishing industry remained strong. There was trade in flounder and salmon; smoked flounder was a regional delicacy. Two annual fairs were held, usually in July and August. Although Cranz had over 6,000 inhabitants by the start of World War II, it has not yet received a town charter.
The area was overrun by the Soviet Red Army during World War II and annexed to the Russian SFSR, although it suffered minimally through warfare.