饮尿俗称喝尿，是指饮用尿液的行为，可能是人类或其他动物的尿液。在不同用途的人类饮尿者当中，喝尿的目的也不同：例如部分人用尿保健养生，而部分人为追求性快感而喝尿。

从人类的角度来看，喝尿通常无害，因为尿液实为血液经过肾脏过滤之液体。但是若尿液来自病人体内或者来自患有尿道炎的患者体内，则有可能引致细菌感染。对于少数对尿液有敏感反应的人，饮尿亦可能会引致出疹。

在医学上，亦有饮尿作为治病或保健作用之人，这种方法被称作尿疗法。

此外，以性虐待为主题的色情电影当中通常含有饮尿甚至食粪的情节。例如巴西的色情电影《饥饿婊子》（其预告片《两女一杯》的熟知度较高）。

Urophagia is the consumption of urine, which is the liquid by-product of blood filtration in the body. There are various reasons that humans may consume urine. Urine was used in several ancient cultures for various health, healing, and cosmetic purposes, practices which are still used by some people of these cultures today. Urine therapy is a form of alternative medicine. Thai people had been practicing urophagia for a long time.