The Nur ul-Ihsan Mosque () was, until 2018, the oldest mosque in Phnom Penh, the capital of Cambodia. It was situated 7 km north of the centre of the city.
It was built in 1813 by the Cham community. It survived the Khmer rouge regime which transformed it into a pigsty.
In 2018 it was destroyed and replaced by the KM7 Mosque, a Middle Eastern design financed by a donation from the Government of Kuwait.