Interior decoration is the art of decorating a room so it looks good, is easy to use, and functions well with the existing architecture. The goal of interior decoration is to provide a certain "feel" for the room; it encompasses applying wallpaper, painting walls and other surfaces, choosing furniture and fittings, such as light fixtures, and providing other decorations for the area such as paintings and sculptures.

Interior decorating is done professionally by interior designers or interior decorators, and by some architects. It is considered a design field.

There is sometimes a distinction made between interior decorating and interior design. Interior decorating is generally focused more on finishes, such as wallpaper, paint, window coverings, and furnishings. Interior design tends to be more integrated with the architecture, and in addition to the above areas, might also be involved in cabinetry design, room layout, window placement, appliance selection, tile and floor selection, et cetera.

See also: Visual arts and design