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