Concurrent percutaneous balloon valvotomy of aortic and tricuspid valve was successfully performed in a 20-year-old male with severe rheumatic aortic and tricuspid stenosis. Balloon valvotomy was done using a 18-mm single balloon for aortic and 20 + 20-mm double balloon for the tricuspid valve. Immediately after valvotomy the peak transaortic systolic gradient decreased from 120 to 32 mmHg and the aortic valve area increased from 0.27 to 1.1 cm2, the mean and end-diastolic trans-tricuspid gradient decreased from 14 and 18 to 1.5 and 2 mmHg, respectively, the tricuspid valve area increased from 0.8 to 3.6 cm2 and the cardiac-index increased from 2 to 2.9 l/mt/m2. At 1 year of follow-up the clinical (NYHA class 1) and hemodynamic improvement was maintained.