Ropp may refer to: Surnames Gordon Ropp, American farmer and politician Robert S de Ropp, biochemist Theodore Ropp, American military historian William de Ropp, British intelligence agent Eduard von der Ropp, Russian Roman Catholic archbishop Locations R.C. Ropp House, historic home in West Virginia, United States Baker Ropp House, historic home in West Virginia, United States Abbreviations Roll-on Pilfer Proof - a type of screw cap where the thread is formed by pressure against the container