The Family Ostreidae is composed of bivalve mollusks commonly known as oysters. Synonyms for this family include the Genus Ostrea, which is a subfamily comprising true oysters, and the Family Crassostreidae, which includes the Pacific oyster, the Kumamoto oyster, and the Olympia oyster. Other synonyms for the Family Ostreidae include flat oysters and rock oysters, as well as the common names of specific species such as Atlantic oysters, European flat oysters, and American oysters. These synonyms highlight the diversity and wide distribution of the oyster family, which is an important seafood resource and an ecologically valuable species that sustains marine and estuarine ecosystems.