A throne room is the room, often rather a hall, in the official residence of the crown, either a palace or a fortified castle, where the throne of a senior figure (usually a monarch) is set up with elaborate pomp— usually raised, often with steps, and under a canopy, both of which are part of the original notion of the Greek word thronos.

A throne room is an impressive setting for a monarch to preside 'in majesty' over official ceremonies, to hold council, to grant audiences, to receive homage, to award high honors and offices, and to perform other official functions. Any of these could just as well be transferred, even on a permanent basis, to one or more other rooms, even outside the palace or ambulant. A common misconception is that kings and other ruling princes governed their lands seated on a throne for most of the working day. In earlier times this may have been true for some rulers who actually presided over their council; yet often another room was used, but only in peacetime.

Many others were almost constantly on the move with an ambulant court. It could even have been that the crown did not have an effective capital, as in England during most of the time before the Norman conquest. Or it could have been that the crown had, rather, a series of alternative residences, as did the Holy Roman Emperors. In their case, these developed into palatinates under the Habsburg Dynasty when they also acquired extensive crown lands outside Germany and Austria, and their court often travelled on an almost continental scale.