Kazys Almenas (11 April 1935 – 7 October 2017) was a Lithuanian physicist, writer, essayist, and publisher. He was born in Gruzdžiai, Šiauliai County, Lithuania. Almenas wrote the novels "Upė į Rytus, upė į Šiaurę" (1964), "Šienapjūtė" (1970), "Sauja skatikų" (1977), and "Lietingos dienos Palangoje" (1988) and the collections of short stories "Bėgiai" (1965) and "Gyvenimas tai kekė vyšnių" (1967), "Vaivos juosta" (2014).