Jijin dubura wata jijiya ce ta jini wacce ke tafiya tare da dubura, wanda shine bangaren karshe na babban hanji. Wannan jijiya tana fitar da jini daga yankin dubura sannan ya mayar da shi zuwa magudanar jini. Kalmar “venue rectal” ana amfani da ita ne a fannin likitanci musamman ga jijiyar da ke zubar da duburar, wanda zai iya girma ko kumburi a yanayi kamar su basir ko kumburin dubura.