Graal-Arelsky (Russian: Граа́ль-Аре́льский, IPA: [ɡrɐˈalʲ ɐˈrʲelʲskʲɪj]; 1889-1937) or Stepan Stephanovich Petrov (Russian: Сте́фан Сте́фанович Петро́в, IPA: [ˈsʲtʲɛfən ˈsʲtʲɛfənəvʲɪtɕ pʲɪˈtrof]), was a poet of Ego-Futurism in Russia. He co-founded the Academy of Ego-Poetry with fellow Ego-Futurist Konstantin Olimpov. Arelsky is also an identified astronomer.