苦蘵（kǔ zhí, Physalis angulata），又称为炮仔灯、天泡子、天泡草、黄姑娘、小酸浆、朴朴草、打额泡，是茄科酸浆属的一种植物。

为一年生草本，直立或披散，高在30至60厘米或更高；茎上多分枝。单叶互生，卵状椭圆形，长3至5厘米，顶端渐尖，基部楔形，边沿有不规则齿。叶柄长1至5厘米。夏秋开花，花冠淡黄色，五瓣，花药黄色或淡紫色。果萼卵球关状，橙黄色，酷似灯笼，浆果藏于果萼内，球形，直径1公分左右，可吃。

多生于山谷、村边、路边、中国南方较常见、东南亚、印度、日本均有。

Physalis angulata is an erect, herbaceous, annual plant belonging to the nightshade family Solanaceae. It is known by several names, including angular winter cherry, balloon cherry, cutleaf groundcherry, gooseberry, hogweed, wild tomato, camapu, and occasionally other common names for the genus Physalis. It reproduces by seed. Its leaves are dark green and roughly oval, often with tooth shapes around the edge. The flowers are five-sided and pale yellow; the yellow-orange fruits are born inside a balloon-like calyx. It is native to the Americas, but is now widely distributed and naturalized in tropical and subtropical regions worldwide.