Abstract: This invention relates to an improved process for manufacturing artificial tanned hides possessing characteristics very similar to those of natural tanned hides. This process comprises the steps of: preparing a colloidal solution of a protein substance of collagenic origin by dissolving untanned flesh and/or slaughterhouse waste in hot water; deeply soaking a synthetic support of good porosity, and of known type, with said solution of collagenic substance, and condensing and cross-linking said collagenic substance on the synthetic support fibres by the simple action of cross-linking agents; and tanning the support thus soaked by using the known tanning processes of natural hide tanning technology.