The present invention provides a connector-integrated type polymer optical waveguide, comprising: an optical waveguide including a film substrate for clad, an optical waveguide core provided on the film substrate, and a clad layer formed on side faces and a top face of the core; a pair of connector sleeves formed at positions at which the connector sleeves sandwich the optical waveguide core at least in one end portion of the polymer optical waveguide; and a rigid member for connector formation, wherein the film substrate for clad and the connector sleeves are fixed to the rigid member for connector formation in such a state that the center of the optical waveguide core and the center for connector sleeves are substantially on the same plane. The present invention also provides a method for producing the above-mentioned connector-integrated type polymer optical waveguide and a mold to be used for the method.