The Al-Muttaqin Mosque (Malay: Masjid Al-Muttaqin) is a mosque in Ang Mo Kio, Singapore. It is the fifth mosque completed in the country under the Mosque Building Fund Scheme Phase I. The mosque's official ground-breaking ceremony was officiated by Mr Syed Ali Redha Alsagoff, chairman of Lembaga Biasiswa Kenangan Maulud (LBKM), on 29 April 1979 and it was officially opened on 21 September 1980 by the late Mr Rahmat Kenap (MP for Geylang Serai).
The chosen name Al-Muttaqin refers to the pious people who are ever aware of God the Almighty.