Rhosus may refer to:

Places and jurisdictions

* Arsuz (Arsûs), formerly known as Rhosus, a coastal town in Hatay Province, Asian Turkey, ** the former Diocese of Rhosus, with see in the above city in Cilicia Secunda, now a Latin Catholic titular see * a place on the Pierian coast in Macedonia

Other uses

* (1986), a Moldovan-flagged cargo ship whose abandoned ammonium nitrate cargo fueled the 2020 Beirut explosions * ''Rhosus'' (moth), a moth genus {{Dab, geo