At least four dialects of Humla Tibetan have been identified. Various authors use different names to distinguish between groups/varieties, generally related to geographical location. Speakers often self-identify using village or dialect-specific names, and these are usually unrelated to the names scholars attribute to these sub-groups. A semi-nomadic group, the
Humli Khyampa, also lives and travels in the Humla district. The relationship between the language spoken by Humla Tibetans and the language of the Humli Khyampa is unclear, though Wilde lists it as a possible fifth dialect of Humla Tibetan, saying that some speakers believe it is related and mutually intelligible. The various names of the four sub-groups are present in the following table.
Humla Tibetan groups/varieties Lexical similarity between Humla Tibetan varieties == Language vitality ==