Dyangadi is a possible small family of extinct or nearly extinct Australian Aboriginal languages of New South Wales:
Dyangadi Nganyaywana Anaiwan Dyangadi Burgadi
They were once included among the Kuric languages.
However, Bowern (2011) retains Dyangadi in Kuric, removing only Nganyaywana as a separate Anewan branch.
Footnotes
References Dixon, R. M. W. (2002). Australian Languages: Their Nature and Development. Cambridge University Press. Bowern, Claire. 2011. How Many Languages Were Spoken in Australia?