Aleksei Yeliseyevich Kruchyonykh (Russian: ??????´? ?????´???? ????????; 9 February 1886 – 17 June 1968), a well-known poet of the Russian "Silver Age", was perhaps the most radical poet of Russian Futurism, a movement that included Vladimir Mayakovsky, David Burliuk and others.
Together with Velimir Khlebnikov, Kruchenykh is considered the inventor of zaum.
Kruchyonykh wrote the libretto for the Futurist opera Victory Over the Sun, with sets provided by Kazimir Malevich.
He married Olga Rozanova, an avant-garde artist, in 1912; four years later, in 1916, he created his most famous book, Universal War.
He is also known for his Declaration of the Word as Such (1913): "The worn-out, violated word "lily" is devoid of all expression.