| Nanocetorhinus Temporal range:
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|---|---|
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| A–H. Nannocetorhinus tuberculatus teeth. A) Holotype, I) Gymnura sp. | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Infraclass: | Euselachii |
| Clade: | Neoselachii |
| Clade: | incertae sedis |
| Genus: | †Nanocetorhinus Underwood & Schlogl, 2013 |
| Type species | |
| †Nanocetorhinus tuberculatus Underwood & Schlogl, 2013
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| Other species | |
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Nanocetorhinus is an extinct genus of sharks in the subclass Neoselachii from the Late Oligocene to Middle Miocene. The type species N. tuberculatus lived across the Northern Hemisphere during the Early to Middle Miocene, and the second species N. zeitlingeri lived in Austria during the Late Oligocene.