The present invention provides a connector for discharge tube made of metal, which can reduce stress propagated from a connector for discharge tube to a lead and prevent breakage between the lead and a glass tube. A connector for discharge tube comprises a cylinder (1), a lead part (2) extending from an end (1a) of the cylinder (1) to the outside in the axial direction of the cylinder (1), and a joint part (3) bent from a tip (2a) of the lead part (2). When an end (21a) of the glass tube (21) which is a component of the discharge tube (20) is attached to the cylinder (1), the lead (22) extending from the end (21a) of the glass tube (21) is placed in a through-hole or a notch part (13) of the joint part (3). The lead part (2) and the joint part (3), shaped in strip, having elasticity, are easily deformed when the cylinder (1) recieves stress and release the stress propageted from the cylinder (1) to the lead (22) through the lead part (2).