Kálmán Kalocsay (; 6 October 1891 in Abaújszántó – 27 February 1976) was a Hungarian Esperantist poet, translator, and editor who significantly influenced Esperanto culture, both in its literature and in the language itself, through his original poetry and his translations of literary works from his native Hungarian and other languages of Europe. His name is sometimes Esperantized as Kolomano Kaloĉajo, and some of his work was published under various pseudonyms, including C.E.R. Bumy, Kopar, Alex Kay, K. Stelov, Malice Pik and Peter Peneter.
kálmán kalocsay (; 6 october 1891 in abaújszántó – 27 february 1976) was a hungarian esperantist poet translator and editor who significantly influenced esperanto culture both in its literature and in the language itself through his original poetry and his translations of literary works from his native hungarian and other languages of europe his name is sometimes esperantized as kolomano kaloĉajo and some of his work was published under various pseudonyms including cer bumy kopar alex kay k stelov malice pik and peter peneter