Abstract: A device to be mounted to a wall, cabinet, counter, or other surface in the dental operatory or medical facility that will securely hold the protective needle cap provided on disposable needles used on dental syringes, or other syringes of similar design, in order that the needle cap may be removed and replaced without risk of an infectious needle stick injury. This is accomplished by engaging a raised annular ridge on the outer surface of the needle cap against an internal shoulder at the open end of a specially shaped trough, sized to accommodate the needle cap. A spring at the other end of the trough provides a rearward force to keep the annular ridge of the needle cap firmly engaged against the internal shoulder at the open end of the trough.