三过氧化三丙酮（Triacetone triperoxide,abbr. TATP）是一种有机过氧化物起爆药，系过氧化丙酮的闭环三聚体，起爆力介于雷汞与叠氮化铅之间。曾考虑用作雷管装药，但因其易于升华的特性（于室温放置两周，质量损失可达66%）兼高机械感度，在商业与军事上并未得到广泛应用。

嗅若丙酮的白色细腻晶体，不溶于水，溶于氯仿等有机溶剂。

作为一种不含氮元素的爆炸物，TATP可以欺骗过时的安检措施。TATP被认为曾用作多起****的爆炸物，如伦敦地铁爆炸案、2015年11月巴黎袭击事件和2016年布鲁塞尔连环爆炸案。

Acetone peroxide is an organic peroxide and a primary high explosive. It is produced by the oxidation of acetone to yield a mixture of linear monomer and cyclic dimer, trimer, and tetramer forms. The trimer is known as triacetone triperoxide (TATP) or tri-cyclic acetone peroxide (TCAP). Acetone peroxide takes the form of a white crystalline powder with a distinctive bleach-like odor and can explode if subjected to heat, friction, or shock. As a non-nitrogenous explosive, TATP has historically been more difficult to detect, and it has been implicated as the explosive used in terrorist attacks in Europe (2016 Brussels bombings) in 2016 and earlier.