A sulfonyl nitrene is a chemical compound with generic formula RSO<sub>2</sub>N. Known sulfonyl nitrenes include methyl sulfonyl nitrene, trifluoromethyl sulfonyl nitrene, and tolyl sulfonyl nitrene. Also fluorosulfonyl nitrene FSO<sub>2</sub>N exists, but rearranges to FNSO<sub>2</sub>. Preparation of sulfonyl nitrenes can be accomplished by heating sulfonyl azides:
They are distinct from sulfinyl nitrenes which only have one oxygen attached to the sulfur atom.