硫代酰胺（Thioamide）是酰胺的硫代类似物。通式 R-CS-NR'R"。

• 硫代乙酰胺（CH₃C(S)NH₂）

A thioamide (rarely, thionamide, but also known as thiourylenes) is a functional group with the general structure R–CS–NR′R″, where R, R′, and R″ are organic groups. They are analogous to amides but they exhibit greater multiple bond character along the C-N bond, resulting in a larger rotational barrier. One of the best-known thioamides is thioacetamide, which is used as a source of the sulfide ion and is a building block in heterocyclic chemistry.