Chloro(tetrahydrothiophene)gold(I), abbreviated (tht)AuCl, is a coordination complex of gold.

Like the dimethyl sulfide analog, this compound is used as an entry point to gold chemistry.

This compound may be prepared by the reduction of tetrachloroauric acid with tetrahydrothiophene:[1] The complex adopts a linear coordination geometry, as is typical of many gold(I) compounds.

The bromide congener is isostructural.

[2] It is somewhat less thermally labile compared to (Me2S)AuCl, but is still sensitive to temperature and light.