中温生物（英文：Mesophile）指在温和环境（20-45°C）中生存的生物，且一般用于描述微生物。而喜欢在极端环境生存的生物则称为嗜极生物。

A mesophile is an organism that grows best in moderate temperature, neither too hot nor too cold, typically between 20 and 45 °C (68 and 113 °F). The term is mainly applied to microorganisms. Organisms that prefer extreme environments are known as extremophiles.