Ski binding (10) for fixing a ski shoe that comprises an upper and a sole (11), having a front retaining element (12) associated with the front end of the sole, a rear retaining element (13) arranged to engage at the foresole or at the heel of the ski shoe, a tensioning means (15, 16, 17, 19) effective between front and rear retaining elements, and having a means, associated with the front retaining element (12) and pivotally mounted relative to the latter about a horizontal axis, for supporting the front end of the sole or sole-supporting means (28), wherein the pivotal axis (29) associated with that supporting means simultaneously defines the pivotal axis about which a structural unit (26) comprising the front and rear retaining elements is pivotable when the shoe heel is lifted or lowered. The sole-supporting means (28) associated with the front end of the sole is pivotable relative to the structural unit (26) and is lockable, as required, by a separate locking element (30).