The Old Friday Mosque, also known as Ancienne Mosquée de Vendredi, is a historic landmark in Moroni, the capital of Comoros. Built in 1427 and expanded with a minaret in 1921, it holds great religious and cultural significance for the Comorian people. Located near the harbor in Medina, the mosque reflects the island's maritime heritage, standing adjacent to boat-building yards and bustling port activities. As one of the oldest and most prominent mosques in Comoros, it embodies a rich tradition of communal prayer, celebrated for its enduring role in the spiritual life of the islands.