A watermark-free hand dryer includes a main body, an annular air discharge portion and a water absorbing portion. The main body generates high pressure airflow. The annular air discharge portion is connected to the main body and includes at least one extending section extended from the main body and a connecting section connected to the extending section. The extending section and connecting section surround to form an annular hand drying passage to receive user's hands. The annular air discharge portion further has at least one nozzle on an air discharge surface communicating with the annular air discharge portion. The nozzle forms an air discharge angle against the air discharge surface to output the high pressure airflow towards an air discharge side. The water absorbing portion is located on the main body and relative to the air discharge side to receive the high pressure airflow output from the nozzle.