A pasty is a British baked pastry, a traditional variety of which is particularly associated with Cornwall, South West England, but has spread all over the British Isles, and elsewhere through the Cornish diaspora. It is made by placing an uncooked filling, typically meat and vegetables, in the middle of a flat shortcrust pastry circle, bringing the edges together in the middle, and crimping over the top to form a seal before baking.

Pastry is baked food made with a dough of flour, water, and shortening that may be savoury or sweetened. Sweetened pastries are often described as bakers' confectionery. The word "pastries" suggests many kinds of baked products made from ingredients such as flour, sugar, milk, butter, shortening, baking powder, and eggs. Small tarts and other sweet baked products are called pastries as a synecdoche. Common pastry dishes include pies, tarts, quiches, croissants, and pasties.