Fusilli (Italian: [fuˈzilli]) are a variety of pasta from southern Italy, with a helical (corkscrew) or helicoidal shape.

Fusilli are believed to be of Arab derivation, and are known as busiata in Sicily and busa in Sardinia, the two Italian regions where Muslim civilization first penetrated.

[1] Both busiata and busa come from the Arabic word bus (بوص), meaning the thin reed around which the dough was traditionally wound to make the pasta.

[1] There are multiple regional Italian varieties of fusilli, which can be either extruded or hand-formed, solid (helicoidal) or hollow (helical), and short or long.

[4][5] In United States and Canada, extruded short helicoidal pasta is also commonly known as "rotini",[4][6] which is frequently sold in both standard and tri-color varieties.