Knipolegus is a genus of South American birds, the black tyrants, in the tyrant flycatcher family Tyrannidae.

The genus was erected by the German zoologist Friedrich Boie in 1826 with the blue-billed black tyrant as the type species. The genus name combines the Ancient Greek knips meaning "insect" and legō meaning "to pick".

Species: The genus contains the following 12 species:

Image	Common name	Scientific name	Distribution
120px]]	Blue-billed black tyrant	Knipolegus cyanirostris	Argentina, Bolivia, Brazil, Paraguay, and Uruguay.
120px]]	Jelski´s black tyrant	Knipolegus signatus	Peru
120px]]	Plumbeous tyrant	Knipolegus cabanisi	southeastern Peru, western Bolivia and northern Argentina.
120px]]	Cinereous tyrant	Knipolegus striaticeps	Bolivia, western Paraguay, northern Argentina
120px]]	White-winged black tyrant	Knipolegus aterrimus	Argentina, Bolivia, Chile, Paraguay, Peru, and Uruguay.
120px]]	Hudson´s black tyrant	Knipolegus hudsoni	central Argentina and winters northwards, reaching Bolivia and Paraguay.
120px]]	Rufous-tailed tyrant	Knipolegus poecilurus	Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela.
120px]]	Riverside tyrant	Knipolegus orenocensis	Brazil, Colombia, Ecuador, Peru, and Venezuela.
120px]]	Amazonian black tyrant	Knipolegus poecilocercus	Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela.
120px]]	Crested black tyrant	Knipolegus lophotes	Brazil, Uruguay and northeastern Paraguay
120px]]	Velvety black tyrant	Knipolegus nigerrimus	Brazil
120px]]	Sao Francisco black tyrant or Caatinga black tyrant	Knipolegus franciscanus	Brazil.