Potassium selenocyanate is the inorganic compound with the formula KSeCN.

It is a hygroscopic white solid that is soluble in water, decomposing in air to red selenium and potassium cyanide.

The compound has been characterized by X-ray crystallography, which confirms that it is a salt.

The C-N and C-Se distances are 112 and 183 pm, respectively consistent with triple and single bonds.

[2] Organic selenocyanates are often prepared by treatment of potassium selenocyanate with alkyl halides or aryl diazonium salts.