氯酸铵（Ammonium chlorate），化学式是NH₄ClO₃，是铵与氯酸根（Chlorate）的无机化合物。主要用途是作为氧化剂，有爆炸性。

Ammonium chlorate is an inorganic compound with the formula NH₄ClO₃.

It is obtained by neutralizing chloric acid with either ammonia or ammonium carbonate, or by precipitating barium, strontium or calcium chlorates with ammonium carbonate or ammonium sulfate, producing the respective carbonate or sulfate precipitate and an ammonium chlorate solution. Ammonium chlorate crystallizes in small needles, readily soluble in water.