The Kayanic or Kayan–Murik languages are a group of Austronesian languages spoken in Borneo by the Kayan, Morek Baram, Bahau, and related peoples.
The Melanau–Kajang languages or Central Sarawak languages are a group of languages spoken in Sarawak, Malaysia, by the Melanau, Kenyah, and related peoples.
Sarawak's population is very diverse, comprising many races and ethnic groups. Sarawak has more than 40 sub-ethnic groups, each with its own distinct language, culture and lifestyle. This makes Sarawak demography very distinct and unique compared to its Peninsular counterpart.