An inflatable air mattress positioner is provided for use with a casket, coffin or alternative container. The assembly includes a partially pneumatic pillow with a chamber in which is disposed a plurality of air chambers, each one of which has a corresponding air tube and valve assembly in communication therewith. A cushion material is also included in the pillow. The cushion material coacts with the air bladders to position the head, upper arm, chest and shoulder region of a cadaver so that the cadaver chin is disposed in an acceptable proper height in relation with the chest according to that which is acceptable to the mortician and mourners. In addition, the assembly includes an inflatable air mattress having a plurality of air chambers which are independently inflatable to position a cadaver at an appropriate height and angle in the casket for mourner viewing. Additional separate independent air bladders are also provided to be disposed under the cadaver to aid in positioning the cadaver and tilt the cadaver along its longitudinal axis for mourner viewing as well as positioning the back, arms, head, neck or any other part of the cadaver that requires adjustment.