A raisin is a dried grape. Raisins are produced in many regions of the world and may be eaten raw or used in cooking, baking and brewing. In the United Kingdom, Ireland, New Zealand, Australia and Canada the word "raisin" is reserved for the dark-coloured dried large grape with "sultana" being a golden-coloured dried grape, and "currant" being a dried small Black Corinth grape.

Raisin varieties depend on the type of grape used, and are made in a variety of sizes and colors including green, black, blue, purple and yellow. Seedless varieties include the sultana (also known as Thompson Seedless in the USA) and Flame grapes. Raisins are traditionally sun-dried, but may also be water-dipped and artificially dehydrated.

"Golden raisins" are treated with sulfur dioxide after drying to give them their golden color.

Black Corinth or Zante currant are miniature raisins that are much darker in color and have a tart, tangy flavor. They are often called currants.