Key clinical messageAn axillo‐axillary bypass grafting is useful for coronary subclavian steal syndrome when occlusion of the proximal left subclavian artery.AbstractAn 81‐year‐old female who had undergone coronary artery bypass grafting 15 years previously was admitted and diagnosed with coronary subclavian steal syndrome. Preoperative angiography showed backflow from the left anterior descending coronary artery to the left internal thoracic artery and occlusion of the proximal left subclavian artery. Axillo‐axillary bypass grafting was successfully performed.