On the basis of revision of herbarium SASY (Yakutsk) a review of species of the genus Castilleja Mutis ex L. f., growing in Republic of Sakha (Yakutia) is made. Herbarium collections reliably confirmed the occurrence on the territory of the Republic of Sakha (Yakutia) of 9 species of Castilleja and 2 species (C. caudata (Pennell) Rebr. and C. elegans Malte) are given on the basis of literature data. In the result of morphological features analysis and characteristics of distribution of yakut species materials were identified which were described as new species C. galaсtionovae E.G. Nikolin and new variety – C. rubra (Drob.) Rebr. var. multicaulis E.G. Nikolin. Key for determination of species and data on their distribution in Yakutia are presented.Key words. Castilleja, review, new species, new variety, Herbarium SASY, Republic of Sakha (Yakutia).