This paper presents a new saxicolous species of Rinodina from the Republic of Sakha (Yakutia), Russia. Rinodina jacutica is characterized by spores of the Dirinaria-type and type A development, a light-gray thallus with a slight yellowish tinge and spot tests K+ yellow and P+ yellow, atranorin present. The paper provides data on the morphology, anatomy, ecology, and collection site of R. jacutica. Keywords: biodiversity, biogeography, lichens, new species, North East Asia, Siberia.