Abstract: A high chair having a seat and back which are both hollow and are hinged together to fold and close against each other to form a carrying case, with a handle which locks the case in closed position. Telescopically adjustable legs are attached to the seat by compound hinges, which allow the legs to spread to a wide stable stance when erected, while enabling the legs to be compactly folded into the seat. A tray is attached to the back on adjustable arms and, when not in use, is stored within the hollow back, the tray being the only part which is completely detached for storage. In the collapsed condition only the tray supporting arms are outside the case and they are folded into recesses along the sides of the back. The chair is easily erected and collapsed without tools.