The spot-winged falconet (Spiziapteryx circumcincta) is a species of bird of prey in subfamily Falconinae of family Falconidae, the falcons and caracaras.

[5] The spot-winged falconet is 25 to 31 cm (9.8 to 12 in) long and weighs 149 to 249 g (5.3 to 8.8 oz); females average about 8% heavier than males.

[4] The spot-winged falconet inhabits the Gran Chaco in mostly-open landscapes such as savanna and semi-arid woodlands; all are characterized by scrub with scattered trees.

Its diet includes insects of many orders, lizards, small mammals, and birds as large as the rufous hornero (Furnarius rufus) and monk parakeet (Myiopsitta monachus).

The clutch size is two to four eggs; the incubation period is not known; fledging is believed to occur about 33 days after hatch.

The spot-winged falconet's main call is a "distinctive nasal clucking constantly repeated, each note falling in pitch with a wailing effect"; it gives this when disturbed at the nest.