Mount Wanniassa is a mountain peak located in Canberra, Australia, nestled between the suburbs of Wanniassa, Farrer, Isaacs and Fadden. The mountain is part of the Wanniassa Hills Nature Reserve, a Canberra Nature Park and adjacent to the Farrer Ridge Nature Reserve. Mount Wanniassa stands at 809 metres (2,654 ft) above sea level,[1] and provides excellent views of the Woden and Tuggeranong areas of Canberra. The mountain can be climbed via the established walking trails on the east and west slopes.

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