Vassalli is a surname of Italian origin. People with that name include:
Fortanerius Vassalli (died 1361), Italian Franciscan Giuliano Vassalli (1915–2009), Italian politician, lecturer and lawyer Luigi Vassalli (1812–1887), Italian Egyptologist and patriot Mikiel Anton Vassalli (1764–1829), Maltese writer Sebastiano Vassalli (1941–2015), Italian writer
See also Liceo Vassalli Junior Lyceum, a school in Malta