An adjustable headrest wherein the adjusting and locking means are contained within the upholstery and the manually accessible operator lever is disposed in such a manner that it constitutes no safety hazard in an automobile. The device comprises a support rack having a series of depressions along its length; a sleeve surrounding the rack and longitudinally slidable with respect thereto and securing means carried by said sleeve for immobilizing the sleeve with respect to said rack in a desired position by manipulating said accessible lever.