During March-April 2019, Powdery mildew symptoms were observed on both surfaces of the leaves of Tarlmounia elliptica at several sites in Lahore, Pakistan. The causal agent was identified as Podosphaera xanthii based on morphology and its identity was confirmed by molecular data. This is the first report of Podosphaera xanthii on Tarlmounia elliptica for Pakistan.