Halszka Osmólska (1930 - 31 March 2008) was a Polish paleontologist who had specialized in Mongolian dinosaurs. A member of the 1965 and 1970 Polish–Mongolian expeditions to the Gobi Desert, she described many finds from these rocks, often with Teresa Maryańska. Among the dinosaurs she described are: Elmisaurus (and Elmisauridae (1981), Hulsanpes (1982), Borogovia (1987), and Bagaraatan (1996); with Maryańska, Homalocephale, Prenocephale, and Tylocephale (and Pachycephalosauria) (1974), Bagaceratops (1975), and Barsboldia (1981); with Maryańska and Altangerel Perle, Goyocephale (1982); with Ewa Roniewicz, Deinocheirus (1967); with Roniewicz and Rinchen Barsbold, Gallimimus (1972); with Kurzanov, Tochisaurus (1991); and with several other authors, Nomingia (2000). Her other work included di