Radium chlorate is an inorganic compound with formula Ra(ClO3)2.

[1] While pure radium chlorate has never been prepared,[1] it is known to form coprecipitates using barium chlorate as a carrier.

[2] These react with excess ammoniacal ammonium carbonate to form a mixed precipitate of radium carbonate with barium carbonate.

[2] Predicted values of its thermodynamic properties are available from Lowson (1985).

[3] Solutions containing radium chlorate may be obtained by dissolving soluble radium salts in a solution of barium chlorate:[2] It is claimed to have application in the production of self luminous watch components.