Longchuansmilus
| Longchuansmilus Temporal range:  | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Mammalia | 
| Order: | Carnivora | 
| Suborder: | Feliformia | 
| Family: | Felidae | 
| Subfamily: | †Machairodontinae | 
| Tribe: | †Machairodontini | 
| Genus: | †Longchuansmilus Jiangzuo et al., 2022 | 
| Type species | |
| †Longchuansmilus xingyongi Jiangzuo et al., 2022 | |
Longchuansmilus is an extinct genus of machairodontine (sabre-toothed) cat that lived in China during the Late Miocene. The type and only species, Longchuansmilus xingyongi, was described in 2022.