The Macro-Gunwinyguan languages, also called Arnhem or Gunwinyguan, are a family of Australian Aboriginal languages spoken across eastern Arnhem Land in northern Australia. Their relationship has been demonstrated through shared morphology in their verbal inflections.

Many of the languages have a fortis–lenis contrast in plosive consonants. Lenis/short plosives have weak contact and intermittent voicing, while fortis/long plosives have full closure, a more powerful release burst, and no voicing.^{[citation needed]}

Rebecca Green (2004) reconstructed the paradigms of 28 Proto-Arnhem verbs. The languages included by Green are as follows, though Green only accepts Maningrida as a demonstrated branch:

*Green does not address Anindilyakwa, Alawa, or Yugul. Yugul is too poorly attested for comparison based on her methods; the other two await validation.

This is close to what Evans (1997) proposed under the name Gunwinyguan (cf. his very different proposal of Arnhem Land languages).

Marra, Warndarrang, Alawa, and Mangarrayi have been argued to constitute a Marran family of considerable time depth (Sharpe 2008).

Heath (1990) demonstrated an East Arnhem family of Ngandi + Nunggubuyu, to which Enindhilyagwa was added (as a closer relative to Nunggubuyu) by Van Egmond (2012).

However, Green (2003) argues that only Maningrida has been established as a valid subgroup, and that the interrelationships of the other languages are as yet unclear. The evidence for Gunwinyguan and perhaps other nodes listed above may simply be reflections of a relationship of all Arnhem languages when only a subset of them was investigated. That is, these groups may be based on shared retentions of Proto-Arnhem rather than distinct historical developments. (However, in reviewing Green, Evans pointed out that much of the Maningrida morphology was also shared by Mangarrayi.) An agnostic view of the family would list each language separately, except for the established Maningrida branch: