Algeria/Elgazayer Square (Maidan al Jazair/Maydan elgazayer) is in the centre of Tripoli (the capital of Libya) a famous centre in Tripoli containing Algeria Square Mosque or Jamal Abdul Nasser Mosque, formerly Tripoli Cathedral (Italian: La Cattedrale di Tripoli; Arabic: كاتدرائية طرابلس‎).

The cathedral was constructed as a cathedral in the 1920s during the Italian Libya colonial era, and converted into a mosque in 1970, with the St. Francis Pro-Cathedral now serving as a temporary cathedral for the Apostolic Vicariate of Tripoli.

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