Ragni is an Italian surname that translates to "spiders" in English. Notable people with the name include:
Elio Ragni (1910–1998), Italian athlete Gerome Ragni (1935–1991), American actor, singer and songwriter Ottavio Ragni (1852–1919), Italian general Riccardo Ragni (born 1991), Italian football goalkeeper
Given name Ragni (actress), actress in Indian and later Pakistani cinema Ragni Piene (born 1947), Norwegian mathematician