Abstract: The present invention relates to a device for fastening a table top on a substructure which comprises a fastening means which can be screwed to the underside of the table top, in particular a fastening means with a fastening cross, fastening plate or the like, on which the table top rests, wherein said fastening means has a defined pattern of holes with a plurality of holes or mounts for fastening screws, which can be plugged through said holes in each case and by way of which the fastening means is screwed to the table top. According to the invention, the table top (10) has slots (11) or grooves which are made in its underside and run such that, when the table top is placed in position on the fastening means, in particular the fastening cross, they coincide with the holes (20) or mounts of the fastening means, in particular of the fastening cross (17), wherein fastening screws which can be screwed into the table top (10) in each case in the region of the slots (11) or grooves are provided.