Mustard may refer to:
Food and plants Mustard (condiment), a paste or sauce made from mustard seeds used as a condiment Mustard plant, one of several plants, having seeds that are used for the condiment Mustard seed, small, round seeds of the mustard plant used in cooking Mustard greens (Brassica juncea), edible leaves from a variety of mustard plant Mustard oil Mustard family, or Brassicaceae, a family of plants Mustard tree, or Salvadora persica Betel vine, produces the fresh fruit mustard stick Tomalley, sometimes called the "mustard" of a crab or lobster
Science and technology Mustard (color), a dull/dark shade of yellow, similar to the color of the condiment BAC Mustard (Multi-Unit Space Transport and Recovery Device), an experimental British spacecraft Mustard gas or sulfur mustard, a chemical weapon Nitrogen mustard, chemotherapy agents derived from mustard gas
Other uses Mustard (name), including a list of people with the name Mustard (album), by English musician Roy Wood Colonel Mustard, a character in the board game Cluedo, otherwise known as Clue Mustard (My Hero Academia), a character in the manga series My Hero Academia Mustard (music producer) Mustard!
See also Mustard plaster, a traditional medical treatment used to treat minor ailments, made from mustard seed powder Garden cress, also referred to as mustard and cress, an edible herb used as a filling or garnish for a variety of dishes The Mustard Seed (disambiguation)