Brass Monkey is the name of various people and things. In several cases, the people and things were named after, or as an allusion to, the colloquial expression.
- Brass monkey (colloquial expression), meaning something solid and inert that can only be affected by extremes, or meaning an extreme of cold
- Brass Monkey (cocktail), an alcoholic drink
- Brass Monkey (band), an English folk band
- Brass Monkey (film), a 1948 film
- "Brass Monkey" (song), a song on the Beastie Boys' 1986 debut album Licensed to Ill
- Brass Monkeys, a UK men's underwear brand.
- A supervillain in the comic book Astro City
- A nickname for the maritime flag of the Cunard Line
- A character in Salman Rushdie's novel Midnight's Children
- The ring-name of Professional MMA fighter, "Jason 'Brass Monkey' Hann"
- The human settlement on the extremely cold alien world Tran-Ky-Ky in the 1974 Alan Dean Foster science fiction novel Icerigger.
- Brass Monkey has also become a relatively common public house name.
