Amurdak, also rendered Amurdag, Amurdak, Amurag, Amarag and Wureidbug, is an Aboriginal Australian language historically spoken in an area around the eastern coast of Van Diemen Gulf, in the Northern Territory of Australia.

According to a report by the National Geographic Society and the Living Tongues Institute for Endangered Languages, it is an endangered language.

The last living speaker, Charlie Mungulda, worked with Australian linguists Nick Evans, Robert Handelsmann and others, over several decades to record his language.

[6][7] According to the 2016 Australian census, there were no speakers of Amurdak in 2016;[8] however, as of March 2021[update] Mungulda's death has not been reported,[9] and he co-authored a paper published in May 2020.

[1] Evans but not Mailhammer identifies a palatal lateral /ʎ/ in Amurdag.