Grease may refer to:
- Grease (lubricant): a type of industrial lubricant
- Yellow grease: in rendering, used frying oils, or lower-quality grades of tallow
- Brown grease: waste vegetable oil, animal fat, grease, etc. that is recovered from a grease trap
- Any petroleum product or fat (including those used in cooking) that is a soft solid at room temperature
- Hydrogenated vegetable oil (vegetable shortening) used as a replacement for lard and other rendered animal fats