Understanding the ¹³C and ¹⁵N enrichments between primate diet and hair is necessary for reconstructing primate diets and ecology. However, dietary lipids need to be controlled for in order to accurately estimate the hair ¹³C and ¹⁵N enrichment factors (ϵ*). We report diet-hair ¹³C and ¹⁵N enrichment factors for vervet monkeys (Chlorocebus aethiops sabaeus) based on a controlled diet study in captivity. The vervet monkeys were fed a standard monkey chow exclusively. The ^13Cϵ*_hair-diet and ^15Nϵ*_hair-diet values for male adults were 2.8‰ and 2.9‰, respectively; those for lactating females were 2.4‰ and 2.2‰, respectively. The isotope enrichment between hair from infant (ca. 3 months of age) and hair from its mother were ^13Cϵ*_{hair(infant-mother)} and _15Nϵ* and ^15Nϵ* _{hair(infant-mother)} were 0.7‰ and 1.8‰, respectively.