Gdynia Aquarium (Polish: Akwarium Gdyńskie) is a public aquarium and sea museum operated by the National Marine Fisheries Research Institute in Gdynia, Poland.
The museum has operated since 21 June 1971.
Previously it was called the Oceanographic Museum and Sea Aquarium of the Sea Fisheries Institute in Gdynia (1971-2003).
The aquarium has a zoological garden status and is situated on the South Pier.