A cloakroom, or sometimes coatroom, is a room for people to hang their cloaks or other outerwear when they enter a building. Cloakrooms are typically found inside large buildings, such as gymnasiums, schools, churches or meeting halls.

In the UK, a cloakroom may also refer to a lavatory. The word is often thought to be derived from the French cloaque (sewer); however, it comes from the French cloque meaning "traveling cloak".