安瓿（ampoule/ampule）是用于盛装药液小型玻璃容器。容量一般为1～25ml。常用于注射用药液，也用于口服液的包装，但因对消费者而言开启困难及容易产生事故，现已不流行。

安瓿最早用来盛放死者的血液的样本，并用来陪葬在他们身边，多见于殉道者墓窟。起先只有殉教者的葬礼能够享受这种待遇，后来变成了一种普遍的风俗。

An ampoule (also ampul, ampule, or ampulla) is a small sealed vial which is used to contain and preserve a sample, usually a solid or liquid. Ampoules are commonly made of glass, although plastic ampoules do exist.

Modern ampoules are most commonly used to contain pharmaceuticals and chemicals that must be protected from air and contaminants. They are hermetically sealed by melting the thin top with an open flame, and usually opened by snapping off the neck. If properly done, this last operation creates a clean break without any extra glass shards or slivers; but the liquid or solution may be filtered for greater assurance. The space above the chemical may be filled with an inert gas before sealing. The walls of glass ampoules are usually sufficiently strong to be brought into a glovebox without any difficulty.