Abstract: A collapsible signpost comprising three major subassemblies is disclosed. An elongate support shaft having a ground engaging stake for engaging the ground mounted at the lower end thereof forms the main body of the signpost. An extendable arm having a mast head for supporting a display at the upper end thereof is received within an opening in the upper end of the support shaft. The arm may be extended upward from the support shaft and clip pin is provided to hold the arm at any of several desired elevations. A weighted cylinder is mounted on the support shaft and is free to reciprocate between flanges located at both the lower end and the upper end of the support shaft. By driving the cylinder against the lower flange, the ground-engaging stake is driven into the ground and by driving the cylinder against the upper flange, the ground-engaging stake is removed from the ground.