A changing room or dressing room is a room or enclosure in a clothing store where customers may try on clothes before purchasing them.

Changing Rooms is the name of a play; see Changing Rooms (play).

Changing Rooms is the name of a BBC television program; see Changing Rooms (TV show).

Changing room number, or Changing rooms is also an expression used in the hotel industry to indicate that a person is changing from one room to another, i.e. if someone does not like the view or the noise from a nearby elevator they may "change rooms" or "change room numbers".