丁螺环酮(Buspirone；8-[4-[4-(2-pyrimidinyl)-1- piperazinyl]butyl]-8-aza- spiro[4.5]decane-7,9- dione monohydrochloride）是一种对精神有效的药剂，主要用于抗焦虑，但有时亦用用于抗抑郁，尽管机会比较少。一般药品都采用盐酸丁螺环酮(Buspirone HCl)的形式，是一种白色的结晶体，可溶于水。有两种形式：锭装或粉装。

Buspirone在1986年由Bristol-Myers Squibb (BMS)向美国食物及药品管理局取得许可，其专利于2001失效。丁螺环酮的专利在2001年到期，丁螺环酮是现在可以作为通用名药物。

Buspirone (/ˈbjuːspᵻroʊn/ BEW-spi-rohn), trade name Buspar, is an anxiolytic psychotropic drug of the azapirone chemical class.   It is primarily used to treat generalized anxiety disorder (GAD). Unlike most drugs predominantly used to treat anxiety, buspirone's pharmacology is not related to benzodiazepines or barbiturates, and so does not carry the risk of physical dependence and withdrawal symptoms for which those drug classes are known.