僧帽水母属（学名：Physalia）是一属管水母，是僧帽水母科下的唯一属。它们是由专门化的水螅体及水母体所组成的群落，分布在印度洋、太平洋及大西洋的海面。它们有一个充气的鳔来维持浮力，并拥有很长及有毒的触须来捕捉猎物。鳔上有像帆的构造，帮助它们随风而荡，但有时也会搁浅在沙滩上。它们触须上的刺细胞在潮湿环境下可以维持达数星期或数个月。

僧帽水母属的物种可以从鳔的大小及触须的多寡来分辨。蓝瓶僧帽水母的分布不及僧帽水母的广泛，体型也略逊。蓝瓶僧帽水母未曾造成任何死亡事故，但僧帽水母就曾导致死亡。

僧帽水母属最初是由让-巴普蒂斯特·拉马克于1801年得到描述。

Physalia is a genus of the order Siphonophora, colonies of four specialized polyps and medusoids that drift on the surface of the Atlantic, Indian and Pacific oceans. Although these organisms look like a single multicellular organism, each specimen is actually a colony of minute organisms called zooids that have to work together for survival. A gas-filled bladder resembling a blue bottle provides buoyancy, and long tentacles of venomous cnidocytes provide a means of capturing prey. A sail on the float, which may be left or right-handed, propels Physalia about the sea, often in groups. Individuals sometimes become stranded on beaches, where their toxic nematocysts can remain potent for weeks or months in moist conditions. Both species of this siphonophore resemble a jellyfish in appearance, with their bell and tentacles.