The Varna Aquarium or Aquarium Varna is a public aquarium in Varna, Bulgaria's largest city on the Black Sea coast.
The aquarium's exhibition focuses on the Black Sea's flora and fauna which includes over 140 fish species, but also features freshwater fish, Mediterranean fish, exotic species from faraway areas of the World Ocean, mussels and algae.
The foundation of the aquarium was initiated by Prince Ferdinand I on 6 January 1906 in the Euxinograd palace. Ferdinand entrusted Doctor Parashkev Stoyanov with the establishment of a maritime biological station. The monarch also requested assistance from the prominent German biologist Anton Dohrn, founder of the Stazione Zoologica in Naples, who provided Ferdinand with blueprints and photographs of the Naples station.