Fever is a major symptom of Kawasaki disease, occurring in 99.5% of patients. We report a case of coronary artery aneurysms without fever in an 8-month-old male infant, who was referred to our department on the 8th day of illness for evaluation of red eyes and erythema at the BCG vaccination site. On the 16th day of illness, he was referred again to our department with membranous debris on his fingers. Cardiac ultrasonography revealed coronary artery aneurysms (#1, 3.9mm [Z=6.68]; #5, 3.3mm [Z=4.96]), and we diagnosed incomplete Kawasaki disease. Coronary angiography performed at the age of 1 year (3 months after disease onset) showed regression of coronary artery aneurysms #1 and #5 to 2.1mm (Z=2.12) and 2.1mm (Z=1.33), respectively; therefore, administration of anticoagulants and antiplatelet agents was discontinued. Considering the possibility of incomplete Kawasaki disease, comprehensive evaluation of coronary artery lesions is warranted even in afebrile patients who present with red eyes and erythema at the site of the BCG inoculation.