Yolmo (Hyolmo), or Helambu Sherpa, is the native Tibeto-Burman language of the Yolmo of south-central Nepal. Yolmo is spoken predominantly in the Helambu and Melamchi valleys in northern Nuwakot District and northwestern Sindhupalchowk District. It has a high level of lexical similarity to Sherpa (61% lexical similarity) and Standard Tibetan (66% lexical similarity).