狨属 (Marmoset) 是狨亚科 (Callitrichinae) 下四个属：真狨属 (Callithrix),，狮面狨属 (Leontopithecus)，柽柳猴属 (Saguinus)，节尾猴属 (Callimico)的总称。其中包括二十二个种，皆为新世界猴。

大部分的狨身长都在20公分左右。它们的主要特征是：有爪子，腕部带有绒毛，没有智齿，大脑比较原始，体温也不稳定。由以上特征显示，相较其他猴类，狨是比较原始的物种。狨原生于南美洲，主要分布于玻利维亚、巴西、哥伦比亚、厄瓜多尔、巴拉圭、秘鲁，最近亦可在发现于中美洲及墨西哥等地。 在某些国家，狨亦可当成宠物饲养。

Callithrix is a genus of New World monkeys of the family Callitrichidae, the family containing marmosets and tamarins. The genus contains the Atlantic Forest marmosets. The genera Mico and Callibella were formerly considered a subgenus of the genus Callithrix. Callithrix differs from Mico in dental morphology and in geographic distribution — Callithrix species are distributed near the Atlantic coast of South America, while Mico species are distributed further inland. Callithrix differs from Callibella in these features, as well as in size, with Callithrix species being significantly larger. Callithrix species differ from the tamarins of the genus Saguinus in that Callithrix has enlarged mandibular incisor teeth the same size as the canine teeth which are used for gouging holes in trees to extract exudates.