Oleynik

Oleynik, also Oleinik (Олейник) may refer to:
 * Larisa Oleynik (born 1981), American actress
 * Anatoly V. Oleynik, Professor of Chemistry at the University of Nizhni Novgorod
 * Alexey Oleinik
 * Olga Arsenievna Oleinik (1925–2001), Soviet mathematician
 * Aleksandr Oleinik
 * Frank Oleynick (born 1955), American retired basketball player