Toll样受体9（）是由人类基因 "TLR9" 编码的蛋白质，也被称为CD289（分化簇289，cluster of differentiation 289），是Toll样受体（TLR）家族的成员。
功能.TLR家族的受体在病原识别与先天免疫的激活中起着基础作用。TLRs are named for the high degree of conservation in structure and function seen between mammalian TLRs and th