The certificate is awarded by the Foundation for Environmental Education, and it means that a beach or marina meets a stringent set of environmental, educational, safety- and access-related criteria.
Blue Flag status was first awarded to a beach in France in 1985, and since then over 4,000 certificates have been awarded to beaches across the world.
"The Kaliningrad region is considered one of the most promising for the development of beach tourism," Russia's Federal Agency for Tourism announced on Tuesday.
The beach at Yantarny features electricity, water, a sewage system, showers and toilets, sun-loungers, umbrellas and changing cabins. A children's play area, sports area and accessibility ramps have also been installed.
Safety at the beach is ensured by coastguard search and rescue teams, emergency first aid and administrators.
"We are training lifeguards, the search and rescue center will work around the clock and also be an administrative center so that visitors can get help at any time. The international program also requires some activities, so we intend to hold some entertainment and sports events," Zalivatskiy said