In order to provide a guide device (100) which is producible in a simple manner and which enables reliable and stable guidance of two elements moveable relative to each other, it is proposed that the guide device (100) comprise a guide rail (102) and a sliding body (110) which is displaceable in sliding manner on the guide rail (102) along a guide direction (112), wherein the sliding body (110) comprises at least one pair (124) of mutually oppositely located sliding surfaces (118) with which the sliding body (110) rests on at least one pair (126) of mutually oppositely located contact surfaces (108) of the guide rail (102), wherein the sliding body (110) comprises a pressing device (130) by means of which the at least one pair (124) of sliding surfaces (118) of the sliding body (110) is pressable onto the at least one pair (126) of contact surfaces (108) of the guide rail (102).