Mieczysław Marian Smolarski (April 6, 1888, Kraków – January 21, 1967, Warsaw) was a Polish writer and poet, whose works included examples of the utopian novel in Polish science fiction, two of which were allegedly plagiarized by Aldous Huxley for his landmark novel Brave New World. He was a close friend of Stefan Żeromski and Karol Irzykowski. His novels and short stories were inspired by the fantastic works of Antoni Lange and Stefan Grabiński. His poems were influenced by the traumatic experiences of both World Wars.