Abstract: The disclosure concerns a support element for the arms, especially suitable for application on writing desks and comprising: a body, substantially flat and shaped in such a way as to allow a person to comfortably rest his/her forearms on it and suitable for being positioned partially overlapping the top of the writing desk; at least one stay element having a first end fixed to the body in correspondence with the surface pressing against the writing desk and a second free end whose distance from the surface of the body to which the first end is fixed is substantially equal to the thickness of the top of the writing desk, the second end pressing against the top of the writing desk in correspondence with the surface on the other side of the top. According to a preferred form of execution, the second free end is provided with an adjustable compensation element that presses without locking against the surface on the other side of the top.