Wanniassa (postcode 2903) is a suburb in Australia's capital, Canberra: more specifically, in the city's southern district of Tuggeranong. The suburb takes its name from a pastoral property granted to Thomas McQuoid in 1835, which he named after Wanayasa in West Java, Indonesia, where McQuoid had previously owned property. Streets are named after Victorian state politicians and the suburb was gazetted on 21 May 1974.
It is next to the suburbs of Kambah, Greenway, Oxley, Monash, Gowrie and Fadden. It is bounded by Athllon Drive, Sulwood Drive, Erindale Drive and Taverner Street.