Wayville is an inner-southern suburb of Adelaide in the City of Unley. It is most notable for hosting of the Royal Adelaide Show at the Adelaide Showgrounds.
The suburb is bordered to the north by Adelaide's South Parklands, to the west by Adelaide-Goodwood railway line, to the east by King William Road, and to the south by Leader Street, Parsons Street and Simpson Parade. Keswick Creek, a tributary of the Brown Hill Creek and Patawalonga River, flows through the southern side of the suburb.