Iatrogenic suclavian artery aneurysm is a rare disease which requires surgery because of the dangers of a rupture. We report a case of an aneurysm of the right subclavian artery developed by an iatrogenic trauma in a 43-year-old male. The preoperative diagnosis was made by an angiography and Doppler ultrasonogram. After the resection of a 6${ imes}$7 cm sized aneurysm, an end to end anastomosis was done with a 6 mm Gore-Tex vascular graft. The post-operative course was uneventful and has been followed up from 3 months after discharge.