Thia
Thia means:
- (405) Thia , an asteroid
- Thia (genus) , a genus of crab
- a prefix in chemistry for replacing a methylene group CH 2 with sulfur, see Thia (chemistry)
in ancient geography:
- Thia (Thera) , an island near Thera (today Santorini), probably today's Palea Kameni
- Thia (Pontus) , a place in Pontus, about 8 km northwest of Gümüşhane in Turkey