Mustard may refer to:

• Culinary mustard, most especially the condiment by the same name, but also the seeds and greens
• Mustard plants, whose seeds are used for the condiment
• Mustard seeds, seeds of the mustard plant used in cooking
• Mustard (color), a shade of yellow, similar to the color of the condiment
• Sulfur mustards, a class of chemical weapons, of which mustard gas is a member
• MUSTARD, an acronym for an experimental spacecraft design
• Mustard (album) by Roy Wood

Sennep | Senf | Mostaza (desambiguación) | Sinapo | Moutarde | Sinapo | חרדל | Mustár | Mosterd | マスタード | Musztarda | Horčica | Gorăica | Sinappi | Senap | 芥末