Grobelny (feminine: Grobelna) is a Polish surname. Notable people with the surname include: Igor Grobelny (born 1993), Belgian-Polish volleyball player Jędrzej Grobelny (born 2001), Polish footballer Julian Grobelny (1893–1946), Polish activist Kaja Grobelna (born 1995), Belgian-Polish volleyball player Ryszard Grobelny (born 1963), Polish politician See also Polish-language surnames