Cyclosa bifurcata is a species of spider in the orb-weaver family Araneidae, found in South America (Costa Rica, Hispaniola to Argentina). (Cyclosa bifurcata Kishida, 1931 is a different species, now regarded as a synonym of Cyrtophora exanthematica.)

Taxonomy: The species was first described by Charles Walckenaer in 1841 as Epeira bifurcata. It was transferred to the genus Cyclosa as Cyclosa bifurcata in 1991 by Herbert Walter Levi.