The Sikorsky Russky Vityaz (Russian: Русский витязь), or Russian Knight, previously known as the Bolshoi Baltisky (Russian: Большой Балтийский) (The Great Baltic) in its first four-engined version, was the first four-engine aircraft in the world, designed by Igor Sikorsky and built at the Russian Baltic Railroad Car Works (Russo-Baltiiskyi Vagonnyi Zavod or R-BVZ) in Saint Petersburg in early 1913.
Sikorsky Russky Vityaz (Rusia: Русскій витязь), atau Ksatria Rusia dan sebelumnya dikenal sebagai Bolshoi Baltisky (Rusia: Большой Балтискій) (The Great Baltic) dalam versi bermesin empat pertama, adalah pesawat bermesin empat pertama di dunia, yang dirancang oleh Igor Sikorsky dan dibangun di Rusia Baltic Railroad Car Works (Rusia-Baltiiskyi Vagonnyi Zavod atau R-BVZ) di Saint Petersburg pada awal 1913. ^ Sergei Sikorsky.