Pyotr Nikolayevich Shabelsky-Bork (Russian: Пётр Николаевич Шабельский-Борк, 5 May 1893 – 18 August 1952) was a Russian officer and writer, active in far-right and anti-Semitic politics in early 20th-century Europe, best known for the assassination of Vladimir Nabokov, father of the novelist of the same name, in Berlin on 28 March 1922. Shabelsky-Bork collaborated with the Nazi Party until the end of World War II, working thereafter on monarchist and Orthodox Christian publications in South America until his death in 1952.