Shrimp and prawn as food

Shrimps and prawns are types of shellfish seafood that are consumed worldwide. Prawns and shrimps are crustacea and are very similar in appearance with the terms often used interchangeably in commercial farming and wild fisheries. A 1990s distinction made in Indian aquaculture literature, which increasingly uses the term "prawn" only for the freshwater forms of palaemonids and "shrimp" for the marine penaeids that belong to different suborders of Decapoda. This has not been universally accepted.

In the United Kingdom, the word "prawn" is more common on menus than "shrimp", whereas the opposite is the case in North America. Also, the term "prawn" is loosely used for larger types, especially those that come 30 (or fewer) to the kilogram — such as "king prawns", yet sometimes known as "jumbo shrimp". In Britain, very small crustaceans with a brownish shell are called shrimps, and are used to make the traditional English dish of potted shrimps. Australia and some other Commonwealth nations follow this British usage to an even greater extent, using the word "prawn" almost exclusively. When Australian comedian Paul Hogan used the phrase, "I'll slip an extra shrimp on the barbie for you" in an American television advertisement, it was intended to make what he was saying easier for his American audience to understand, and was thus a deliberate distortion of what an Australian would typically say. They are also used in dishes where they are not the primary ingredient. The French term crevette is often encountered in restaurants.

All shellfish, including prawns and shrimps, are among the most common food allergens.

The Jewish dietary laws, kashrut forbid the eating of shellfish, including prawns and shrimps. Meanwhile, in Islamic dietary law, the Shafi'i, Maliki, Hanbali and Ja'fari schools allow the eating of shrimp, while the Hanafi school does not.