The Hajjah Fatimah Mosque (Malay: Masjid Hajjah Fatimah; Jawi: مسجد حاجة فاطمة‎; Arabic: مَسْجِد ٱلْحَاجَّة فَاطِمَة‎, romanized: Masjid Al-Ḥājjah Fāṭimah) is a mosque located along Beach Road in the Kampong Glam district within the Kallang Planning Area in Singapore.

The mosque is named after an aristocratic Malay lady, Hajjah Fatimah, who commissioned its construction.

[1] The building of the mosque was initiated by Hajjah Fatimah, who was originally from a wealthy Malaccan family.

[1] The main prayer hall was rebuilt in the 1930s, based on design by architects Chung & Wong, and constructed by French contractors Bossard & Mopin with Malay workers.

[3][5] The minaret is flanked by two houses in European style but with Chinese features, for example in its windows and woodwork.