Unanderra (/ˈjuːnəndɛrə/ YEW-nən-derr-ə) is a suburb of Wollongong in New South Wales, Australia. It is located approximately 10 km south-west of the Wollongong CBD. It is bordered to the west by Farmborough, Cordeaux Heights and Farmborough Heights in the Mount Kembla foothills, the north by Figtree, the east by Berkeley and Flagstaff Hill, site of the Nan Tien Temple, and the south by Kembla Grange.
Unanderra is both a residential suburb, mostly to the west of the Princes Highway and industrial, to the east. Along the highway is a strip of commercial ventures such as a Woolworth's and several speciality stores.
Two distinctive and beautiful buildings in Unanderra are the Catholic Church and the Syrian Orthodox Church. The Immaculate Conception Catholic Church was opened in 1954 and subsequently extended in 1997 and is located at 48 Princes Highway, Unanderra. Saint Thomas Syrian Orthodox Church in Central Road, Unanderra, was opened in 2007.
There are a number of locally owned service providers within the Unanderra area including Electricians, Plumbers, Pest Controllers, Lawn Mowing Services and House Cleaners.
Unanderra has several local attractions including an old school building, several historic houses and a community centre. The community centre is housed in the former Central Illawarra Municipal Council Chambers, opened in 1901. This operated until the merging of the North Illawarra and Central Illawarra chambers to create the City of Greater Wollongong in 1947. The Unanderra Branch Library opened in 1955 within the centre and was enlarged in 1960.
The suburb lies on the Illawarra coastal plain, with its west border in the lower foothills of Mount Kembla.