密蒙花（学名：Buddleja officinalis）是玄参科醉鱼草属的植物。

落叶灌木。小枝略呈四棱形，密被灰白色绒毛；卵状至长圆状披针形叶子丛生，全缘或有齿锯，下面密被灰白色至黄色星状茸毛；顶生圆锥花序，各部密被茸毛，芳香的花，淡紫色花冠，筒的内面黄色。

Buddleja officinalis is a deciduous early-spring flowering shrub native to west Hubei, Sichuan, and Yunnan provinces in China. Discovered in 1875 by Pavel Piasetski, a surgeon in the Russian army, B. officinalis was named and described by Maximowicz in 1880. Introduced to western cultivation in 1908, B. officinalis was accorded the Royal Horticultural Society's Award of Merit three years later, and the Award of Garden Merit (record 689) in 2002.