Southern common cuscus

{{Short description|Species of marsupial}}

{{Speciesbox

| name = Southern common cuscus{{MSW3 Groves|pages=47}}

| image = Southern Brown Cuscus, photo by CNZdenek & AJBurnett.jpg

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Salas, L. |author2=Dickman, C. |author3=Helgen, K. |date=2016 |title=Phalanger mimicus |volume=2016 |page=e.T136450A21951638 |doi=10.2305/IUCN.UK.2016-2.RLTS.T136450A21951638.en |access-date=13 November 2021}}

| status2 = CITES_A2

| status2_system = CITES

| status2_ref = {{Cite web|title=Appendices {{!}} CITES|url=https://cites.org/eng/app/appendices.php|access-date=2022-01-14|website=cites.org}}

| genus = Phalanger

| species = mimicus

| authority = Thomas, 1922

| range_map = Southern Common Cuscus area.png

| range_map_caption = Southern common cuscus range

}}

The southern common cuscus (Phalanger mimicus), also known as Australian cuscus, gray phalanger, and to-ili, is an arboreal marsupial endemic to Australia (Cape York), southern New Guinea and possibly the Aru Islands. Until recently, it was considered conspecific with P. intercastellanus, and before that also with P. orientalis.