烟曲霉（学名：Aspergillus fumigatus）为发菌科曲菌属下的一个种。

烟曲霉存在于罗汉松属植物里，能够产生紫杉醇，有抑癌活性，能令癌细胞凋亡。

Aspergillus fumigatus is a fungus of the genus Aspergillus, and is one of the most common Aspergillus species to cause disease in individuals with an immunodeficiency.

A. fumigatus, a saprotroph widespread in nature, is typically found in soil and decaying organic matter, such as compost heaps, where it plays an essential role in carbon and nitrogen recycling. Colonies of the fungus produce from conidiophores thousands of minute grey-green conidia (2–3 μm) that readily become airborne. For many years, A. fumigatus was thought to only reproduce ****ually, as neither mating nor meiosis had ever been observed. In 2008, however, A. fumigatus was shown to possess a fully functional sexual reproductive cycle, 145 years after its original description by Fresenius. Although A. fumigatus occurs in areas with widely different climates and environments, it displays low genetic variation and lack of population genetic differentiation on a global scale. Thus the capability for sex is maintained even though little genetic variation is produced.