溴化镭是一种镭的化合物，是一种溴化盐类，具放射性，分子式为RaBr₂，通常外观为白色粉末状，其结晶的晶体结构为正交晶系。

碳酸镭加入氢溴酸中，然后于氩气保护下加热至550℃持续390分钟，而制得。

RaCO₃ + 2HBr → RaBr₂ + CO₂ + H₂O

也可以在气态溴化氢中加热氯化镭，发出红光时，表示溴化氢还原了氯化镭生成溴化镭。

RaCl₂ + 2HBr → RaBr₂ + H₂ + Cl₂

Radium bromide is the bromide salt of radium, with the formula RaBr₂. It is produced during the separation of radium from uranium ore. This inorganic compound was discovered by Pierre and Marie Curie in 1898, which sparked a huge interest in radiochemistry, especially radiotherapy. Since radium oxidizes rapidly in air and in water, the salt form is the preferred chemical form to work with. Even though the salt form is more stable, radium bromide is still a dangerous chemical that can explode under certain conditions.