Rijeka Natural History Museum, Natural history museum in Rijeka, Croatia

Rijeka Natural History Museum is a science museum in the Adriatic port city displaying fossils, marine creatures, and thousands of insect species from the region. It features a multimedia center and aquarium with Adriatic species, plus space for rotating natural science exhibitions.

On 16 May 1876, Dr. Josef Roman Lorenz sent Rijeka mayor Giovanni de Ciotta a plan for a regional natural history museum, modelled on Vienna's Naturhistorisches Museum. The collections were initially part of the city museum; on the initiative of amateur naturalist Mario Rossi, the museum became independent in 1945 and opened to the public on 1 May 1946 in the Negroni family building east of the Governor's Palace, where it remains.

The museum reflects how locals and visitors connect with the natural world through its displays about regional wildlife and plants. Interactive exhibits encourage people to notice and care about the living things around Rijeka.

The museum is easy to find at Lorenzov Prolaz 1 and well-organized with clear paths through different exhibition rooms. Visitors should allow time to explore both the indoor collections and the botanical garden outside.

The museum holds 26 collections with about 90,000 objects, including notable mineral, sponge and algae collections. Since 2007 these have been searchable on an online inventory portal, and the specialist library holds 3,500 books.