硫酰胺（化学式：H₂NSO₂NH₂），又名磺酰胺，是硫酸的二酰胺衍生物。

由硫酰氯与氨反应制备。

Sulfamide (IUPAC name: sulfuric diamide) is a chemical compound with the molecular structure H₂NSO₂NH₂. Sulfamide is produced by the reaction of sulfuryl chloride with ammonia. Sulfamide was first prepared in 1838 by the French chemist Henri Victor Regnault.