Potassium pertechnetate is a chemical compound of technetium and potassium, with the chemical formula of KTcO4.

Potassium pertechnetate can be obtained by the neutralisation of potassium hydroxide and pertechnetic acid:[2] The distance of the Tc–O bond in potassium pertechnetate is 173.9 pm and the angle of the O–Tc–O bond is 108.05° and 110.19°.

The distance between the potassium and the oxygen is 289.36 pm and 286 pm.

[2] Potassium pertechnetate crystallizes in the tetragonal crystal system with space group I41/a (space group no.

[3] Potassium pertechnetate is used to prepare other radiopharmaceuticals.