Salvator duseni is a species of lizard in the family Teiidae. The species is sometimes known commonly as the yellow tegu. It is native to South America.

Etymology: S. duseni is named after Swedish botanist Per Karl Hjalmar Dusén who collected the holotype.

Geographic range: S. duseni is found in Brazil, Bolivia and Paraguay. In Brazil it is found in Bahia, Distrito Federal, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Paraná, and Tocantins.

Habitat: The preferred natural habitat of S. duseni is savanna.

 S. duseni can grow to 41 cm in snout-to-vent length (SVL).

Behavior: S. duseni is diurnal and terrestrial.

Diet: An omnivore, S. duseni eats plants, invertebrates, and small vertebrates.

Reproduction: S. duseni is oviparous. Clutch size is approximately 36 eggs.