Diergaarde Blijdorp (Official Dutch name: Stichting Koninklijke Rotterdamse Diergaarde, Foundation Royal Zoo of Rotterdam) is a zoo in the northwestern part of Rotterdam, one of the oldest zoos in the Netherlands. In 2007 it celebrated its 150th anniversary.
Diergaarde Blijdorp is a member of the Dutch Zoo Federation (NVD) and the European Association of Zoos and Aquaria (EAZA).
The original Rotterdam Zoo was lost in the bombing of Rotterdam in World War II, which destroyed most of the city centre. Some streetnames, such as Diergaardesingel (Zoolane), still recall the old zoo. Blijdorp was rebuilt slightly to the north, where it opened to the public in its current location on December 7, 1940. The new zoo was designed by Dutch architect Sybold van Ravesteyn, who designed the central railway station in Rotterdam, as well. In 2001, 'Blijdorp' became almost twice as large when it opened a new western part, called Oceanium, with its main attraction an aquarium. In 2007, the zoo was declared a rijksmonument.