Mould for making a support element for the human body, such as a bicycle saddle or a motorcycle saddle, wherein the mould includes a first component or matrix, which is provided with a cavity open at the top, and at least one second component or false-male, in which the second component or false-male has a through opening, the cavity of the first component or matrix and the through opening of the second component or false-male determine a cavity, which has a conformation in use matching the conformation and/or the bulk and/or to the outer surface of the support element for the human body or the saddle; method for obtaining the support element for the human body and support element for the human body.