| Named By: | Anthony R. Fiorillo & Ronald S. Tykoski in 2014 |
| Time Period: | Late Cretaceous, 69.1 Ma |
| Location: | USA, Alaska - Prince Creek Formation |
| Size: | Uncertain due to lack of remains, but reconstructions of the skull place the length of the whole skull at between 60 and 70 centimetres. This in turn has led to rough estimates for the total length of the animal of around 6 meters long |
| Diet: | Carnivore |
| Fossil(s): | Partial remains of skull and lower jaw |
| Classification: | | Chordata | Reptilia | Dinosauria | Theropoda | Tyrannosauroidea | Tyrannosauridae | Tyrannosaurinae | |
Nanuqsaurus (meaning "polar bear lizard") is an extinct genus of carnivorous tyrannosaurid theropod known from the Late Cretaceous (early Late Maastrichtian stage) Prince Creek Formation of the North Slope of Alaska, USA. It contains a single species, Nanuqsaurus hoglundi, known only from a partial skull.