The present invention provides a cheese slicer adjustable for slicing cheese in variable thicknesses, comprising a handle; a guiding plate pivotally connected to the handle; a slicing plate having a slicing blade, wherein the slicing blade and the guiding plate together define a gap as slice thickness; a linkage movably resting against the guiding plate so that the movement of the linkage enables the guiding plate to pivot around the handle relative to the slicing blade thereby to provide variable slice thickness for the item to be sliced; an actuator assembly in operative connection with the linkage to move the linkage on the guiding plate. The cheese slicer of the present invention further comprises an indicating mechanism to clearly indicate the selected thickness of the sliced cheese.