Tomzhangsa Gewog (Dzongkha: à ½¦à ¾Âà ½¼à ½Âà ¼Âà ½Âà ½²à ¼Âà ½Âà ½Âà ½Âà ¼Âà ½¦à ¼Â) is a gewog (village block) of Trashiyangtse District, Bhutan. It was formerly known as Tomzhangtshen.