Glenunga International High School (informally known as Glenunga or GIHS) is a publicly funded school in Adelaide, South Australia. It is located approximately four km south-east of the Adelaide city centre in the suburb of Glenunga, between L'Estrange St and Conyngham St, adjoining the major thoroughfare Glen Osmond Road. The school serves the surrounding suburbs of the cities of Unley, Burnside and the Adelaide Hills.