Anadara diluvii is an extinct species of saltwater bivalves, ark clams, in the family Arcidae.

[1] Shells of Anadara diluvii can reach a size of 10–45 millimetres (0.39–1.77 in).

[2] The two valves are symmetrical to each other, but the sides are asymmetrical.

[3] This species is known in the fossil record from the Oligocene period to the Quaternary period (age range: 23.03 to 0.012 million years ago).

In the Pliocene of Algeria, Cyprus, Greece, Italy, Spain, in the Miocene of Belgium, Bulgaria, Cyprus, Germany, Greece, Italy, Poland, Romania, Slovakia, Spain and in the Oligocene of Austria and Hungary.