Biziura is a genus of stiff-tailed ducks endemic to Australasia and containing one living and one subfossil species.
Species
{| class="wikitable"
|-
! Image !! Scientific name !! Common name!! Distribution
|-
|120px || B. lobata Stephens, 1824 || musk duck || Widely distributed through south-eastern Australia, south-west Western Australia and the Murray-Darling Basin.
|-
| || †B. delautouri Forbes, 1892 || New Zealand musk duck || previously endemic to New Zealand, and occurring on both North and South Islands, but now extinct.
|-
|}