苯并噻吩（分子式：C₈H₆S），又称硫茚，是一种由苯环和噻吩环经 边稠合而成的双环芳香杂环化合物。

无色薄片状固体，有类似萘的气味。

Benzothiophene is an aromatic organic compound with a molecular formula C₈H₆S and an odor similar to naphthalene (mothballs). It occurs naturally as a constituent of petroleum-related deposits such as lignite tar. Benzothiophene has no household use. It is used primarily in industry and research.