| Northern nail-tail wallaby | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Mammalia | 
| Infraclass: | Marsupialia | 
| Order: | Diprotodontia | 
| Family: | Macropodidae | 
| Genus: | Onychogalea | 
| Species: | O. unguifera | 
| Binomial name | |
| 
Onychogalea unguifera (Gould, 1841)  | 
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| The distribution of the northern nail-tail wallaby Data from The Atlas of Living Australia  | 
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The northern nail-tail wallaby (Onychogalea unguifera) also known as the sandy nail-tail wallaby, is a species of macropod found in Queensland, Western Australia and Northern Territory. Unlike the bridled nail-tail wallaby (O. fraenata), the northern nail-tail wallaby is not a threatened species. The only other member of the genus, the crescent nail-tail wallaby (O. lunata), is extinct.
The northern nail-tail wallaby by far the largest species in the genus Onychogalea. It is a solitary, nocturnal browser feeding on a variety of foliage. It is a sandy colour, which gave rise to its other common name.
Two subspecies have been defined, but their validity is disputed.