四氧化三铅，化学式Pb₃O₄，可视为PbO₂·2PbO之复合物，俗称铅丹。常温时为鲜红色粉末。与油类相调和后，涂在铁器上，可防止生锈。

制备：由一氧化铅在空气中加热至500℃制得：

产物中含有杂质一氧化铅，可用氢氧化钾溶液提纯：

Lead(II,IV) oxide, also called minium, red lead or triplumbic tetroxide, is a bright red or orange crystalline or amorphous pigment. Chemically, red lead is Pb₃O₄, or 2 PbO·PbO₂. Pb₃O₄,is [2PbO].[PbO₂] or Lead(II,IV) oxide. It is used in the manufacture of batteries, lead glass and rust-proof primer paints.