Punan Ba or Punan is an ethnic group found in Sarawak, Malaysia. They are distinct, unrelated to the Penan and also the other so called Punan found in Kalimantan, the Indonesian part of Borneo. Their name stems from two rivers along the banks of which they have been living time immemorial. They do have other names: Mikuang Bungulan or Mikuang and Aveang Buan. But those terms are only used ritually these days.