Prince Nikolai Sergeyevich Trubetzkoy was a Russian linguist and historian whose teachings formed a nucleus of the Prague School of structural linguistics. He is widely considered to be the founder of morphophonology. He was also associated with the Russian Eurasianists.

Eurasianism is a socio-political movement in Russia that emerged in the early 20th century under the Russian Empire, which states that Russia does not belong in the "European" or "Asian" categories but instead to the geopolitical concept of Eurasia governed by the "Russian world", forming an ostensibly standalone Russian civilization.