There are several institutions known as the National Aquarium:

• National Marine Aquarium of Namibia

• National Museum of Marine Biology and Aquarium, Taiwan

• National Aquarium Denmark
• National Marine Aquarium, Plymouth, England

• National Aquarium (Baltimore), U.S.
• National Aquarium (Washington, D.C.), U.S.

• National Aquarium of New Zealand
• National Zoo & Aquarium, Canberra, Australia