- In geometry, the unit of angle radian has the symbol rad.
- In radiation, a unit of radiation dose, and the symbol for this unit, see: Rad (Units of radiation dose).
- In film, a 1986 release about a young [BMX] rider and his team of riders, see: Rad (film)
- In slang. a term used as an adjective to describe something in a positive sense.
- In sports, an activity akin to extreme walking in which the participant challenges himself to pull off pre-developed tricks without the use of a skateboard or any similar wheeled device; also used in the form of a verb: "Let's go out radding!"
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