S-Nitrosotriphenylmethanethiol is the organosulfur compound with the formula (C6H5)3CSNO.

It is a rare example of a nitrosothiol derivative that is robust solid at room temperature.

The green compound can be produced by the reaction of triphenylmethanethiol with nitrous acid: According to X-ray crystallography, S-nitrosotriphenylmethanethiol features a conventional trityl group appended to a bent SNO substituent.

The S-N=O angle is 114°, while the S-N and N=O distances are 1.78 and 1.79 Å.

Other S-nitrosothiols, e.g. MeSNO and SNAP have characterized by similar structures.