A leg coupling for a table includes a coupling body for supporting a lower surface of a top plate. The coupling body includes an upper coupling projecting downward. The upper coupling is configured to be inserted into a coupling insertion hole of a leg. A lower coupling with a thread hole is coaxially arranged under the upper coupling. The coupling body includes a bolt insertion hole. A bolt inserted into the bolt insertion hole is screwed into the thread hole of the lower coupling. A peripheral surface of the upper coupling or a peripheral surface of the lower coupling can be press-fitted to an inner surface of the leg. The peripheral surface of the upper coupling has the same diameter as the peripheral surface of the lower coupling. Opposing ends of the upper coupling and the lower coupling have taper surfaces that can be engaged with each other.