Boris Kowerda (Russian: ????? ???????, 21 August 1907 – 18 February 1987), also known as Boris Koverda, was a Russian exile convicted of murdering Pyotr Voykov, Soviet ambassador to Poland in 1927 in Warsaw.
Voykov was reportedly assassinated in retaliation for having personally directed the assassinations of Tsar Nicholas II and the Russian Imperial family in 1918.
He was allowed, via private bill to emigrate to the United States from his refuge in Germany.