| Named By: | Thomas Hawkins in 1840 |
| Time Period: | Rhaetian - Hettangian |
| Location: | England |
| Size: | Unavailable |
| Diet: | Piscivore |
| Fossil(s): | Partial remains |
| Classification: | | Chordata | Reptilia | Sauropterygia | Plesiosauria | |
Thalassiodracon (tha-LAS-ee-o-DRAY-kon) is an extinct genus of small pliosaurs. The type and only species, is Thalassiodracon hawkinsi Owen 1840.