Abstract: Disclosed are a connector and an assembly toy set including the same. The connector includes a body having an upper surface, a lower surface, and a plurality of side surfaces, a first coupling part disposed on at least one of the plurality of side surfaces, and a second coupling part disposed on the upper surface, the lower surface, or the side surfaces, except for the surface on which the first coupling part is disposed. The first coupling part has a column shape that protrudes from the surface on which the first coupling part is disposed and has a joint ball for joint coupling at an end thereof. According to the present invention, various connection postures may be provided by using the joint balls for joint coupling at an end of the connector. Accordingly, various desired models may be easily assembled.