松乳菇（学名：Lactarius deliciosus），又名美味松乳菇、松树蘑、松菌、重阳菌等，是乳菇属中最常见的大型蘑菇之一。原产欧洲和北美洲，现已随着松树传入其他区域，可见于松树种植园。

在西班牙赫罗纳附近，它的西班牙名字意思也是松树蘑，因它只分布在野生松树林附近。一般八月底大雨之后，到十月分采收。因为产量很低，价钱昂贵。

意大利古城赫库兰尼姆（今埃尔科拉诺）遗址中有一幅壁画中画了松乳菇。这是体现蘑菇的最古老的艺术作品之一。

在液体培养液中，此菌的菌丝体生产各种脂肪酸以及其它化合物。

Lactarius deliciosus, commonly known as the saffron milk cap and red pine mushroom, is one of the best known members of the large milk-cap genus Lactarius in the order Russulales. It is found in Europe and has been accidentally introduced to other countries under conifers and can be found growing in pine plantations. A fresco in the Roman town of Herculaneum appears to depict Lactarius deliciosus and is one of the earliest pieces of art to illustrate a fungus.