The Hajjah Fatimah Mosque (Malay: Masjid Hajjah Fatimah, Jawi: مسجد لحاجة فاطمة) is a mosque located along Beach Road in the Kampong Glam district within the Kallang Planning Area in Singapore. The mosque was designed in a mix of Islamic and European architectural styles, and completed in 1846. The mosque is named after an aristocratic Malay lady, Hajjah Fatimah, who commissioned its construction.