|Ethnicity||Marrithiyal people, Marimanindji, Maridan, Mariamo, Maridjabin, Marijedi|
|15 (2016 census)|
Dialects besides Marrithiyel proper are Nganygit, Marri Amu (Marriammu, Mare-Ammu), Maridjabin (Maredyerbin, Maretyabin, Maridyerbin, Maritjabin), Marridan (Meradan), Marramanindjdji (Marramaninydyi, Marimanindji), and Mariyedi.
The Marri Amu dialect is part of a language revival project to save critically endangered languages. As of 2020 , Marri Amu is one of 20 languages prioritised as part of the Priority Languages Support Project, being undertaken by First Languages Australia and funded by the Department of Communications and the Arts. The project aims to "identify and document critically-endangered languages -- those languages for which little or no documentation exists, where no recordings have previously been made, but where there are living speakers".