Chasmataspis
| Chasmataspis Temporal range:  | |
|---|---|
| Holotype specimen | |
| Life reconstruction of C. laurencii | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Subphylum: | Chelicerata | 
| Clade: | Dekatriata | 
| Order: | †Chasmataspidida | 
| Family: | †Chasmataspididae Caster & Brooks, 1956 | 
| Genus: | †Chasmataspis Caster & Brooks, 1956 | 
| Type species | |
| †Chasmataspis laurencii Caster & Brooks, 1999 | |
Chasmataspis is a genus of chasmataspidid, a group of extinct aquatic chelicerate arthropods. It was found in the Early Ordovician deposits of Tennessee, United States.