Vacuum valve, in particular a vacuum slide valve, in particular a gate valve, for substantially gas-tight closure of an opening defining an opening axis, comprising • a closure element (14, 14') having a closure side and a coupling unit which is arranged on a rear side opposite the closure side, • a valve wall (12, 12') with valve seat surrounding the opening, • a linear drive unit, by means of which the closure element (14, 14') can be adjusted in at least two adjustment directions essentially orthogonally to the opening axis along an adjustment axis and thus the closure element (14, 14') can be adjusted between o an open position releasing the opening, o an intermediate position slid over the opening, in which the closure element (14, 14') is at least partially in a substantially parallel spaced-apart opposite position to the valve seat, and o a closed position closing the opening, wherein the closure element (14, 14') is pressed with its closing side onto the valve seat and closes the opening, in particular closes it in a gas-tight manner, wherein • the vacuum valve has a guide (26, 26') for the closure element (14, 14') associated with the opening, • the closure element (14, 14') comprises a guide element (25, 25') cooperating with the guide (26, 26') during a displacement from the open position to the closed position and back, • the guide (26,26') has a o depression, o elongated recess, o trough or o groove defining a guide path, or is designed as such, characterized in that • the guide (26, 26') and the guide element (25, 25') are shaped and cooperate in such a way that, in the course of the adjustment from the intermediate position into the closed position, a tilting of the closure element (14, 14') transversely to the adjustment axis is initiated and/or effected in a first partial movement, and • the guide (26, 26') only permits a mobility of the closure element (14, 14') which is defined by the guide path. • a closure element (14, 14') having a closure side and a coupling unit which is arranged on a rear side opposite the closure side, • a valve wall (12, 12') with valve seat surrounding the opening, • a linear drive unit, by means of which the closure element (14, 14') can be adjusted in at least two adjustment directions essentially orthogonally to the opening axis along an adjustment axis and thus the closure element (14, 14') can be adjusted between o an open position releasing the opening, o an intermediate position slid over the opening, in which the closure element (14, 14') is at least partially in a substantially parallel spaced-apart opposite position to the valve seat, and o a closed position closing the opening, wherein the closure element (14, 14') is pressed with its closing side onto the valve seat and closes the opening, in particular closes it in a gas-tight manner, wherein o an open position releasing the opening, o an intermediate position slid over the opening, in which the closure element (14, 14') is at least partially in a substantially parallel spaced-apart opposite position to the valve seat, and o a closed position closing the opening, wherein the closure element (14, 14') is pressed with its closing side onto the valve seat and closes the opening, in particular closes it in a gas-tight manner, • the vacuum valve has a guide (26, 26') for the closure element (14, 14') associated with the opening, • the closure element (14, 14') comprises a guide element (25, 25') cooperating with the guide (26, 26') during a displacement from the open position to the closed position and back, • the guide (26,26') has a o depression, o elongated recess, o trough or o groove defining a guide path, or is designed as such, characterized in that o depression, o elongated recess, o trough or o groove defining a guide path, or is designed as such, characterized in that • the guide (26, 26') and the guide element (25, 25') are shaped and cooperate in such a way that, in the course of the adjustment from the intermediate position into the closed position, a tilting of the closure element (14, 14') transversely to the adjustment axis is initiated and/or effected in a first partial movement, and • the guide (26, 26') only permits a mobility of the closure element (14, 14') which is defined by the guide path.