N-Sulfinylaniline is the organosulfur compound with the formula C6H5NSO.

N-Sulfinylaniline is an example of a sulfinylamine.

It is a dienophile[2] and a ligand in organometallic chemistry.

[3] It is prepared by treating aniline with thionyl chloride:[4] X-ray crystallographic analysis confirms that N-sulfinylaniline is structurally related to sulfur dioxide as well as sulfur diimide.

The C–S=N=O dihedral angle is –1.60°.