Squid is eaten in many cuisines; in English, the culinary name calamari is often used for squid dishes. There are many ways to prepare and cook squid. Fried squid is common in the Mediterranean. In New Zealand, Australia, the United States, Canada, and South Africa, it is sold in fish and chip shops, and steakhouses. In Britain, it can be found in Mediterranean 'calamari' or Asian 'salt and pepper fried squid' forms in various establishments, often served as a bar snack, street food, or starter.

A squid is a mollusc with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting these criteria. Like all other cephalopods, squid have a distinct head, bilateral symmetry, and a mantle. They are mainly soft-bodied, like octopuses, but have a small internal skeleton in the form of a rod-like gladius or pen, made of chitin.