催产素酶（Oxytocinase）是一种可以代谢催产素的酶。最著名的催产素酶是Leucyl-cystinyl氨肽酶，本身也是脑啡肽酶，已知也有其他的催产素酶。

阿吗他定、短集成蛋白（ubenimex）及嘌呤霉素都可以抑制催产素的代谢，不过他们也会抑制其他多肽（像是后叶加压素、甲硫脑素及强啡肽等）的分解，。EDTA、L-甲硫氨酸、邻二氮菲及磷酸阿米酮也会抑制催产素的代谢。

Oxytocinase is a type of enzyme that metabolizes the endogenous neuropeptide, oxytocin. The most well-characterized oxytocinase is leucyl/cystinyl aminopeptidase, which is also an enkephalinase. Other oxytocinases are also known.