The Archdiocese of Łódź (Latin: Archidioecesis Lodziensis) is a Latin Church archdiocese of the Catholic Church located in the city of Łódź in Poland.

The archdiocese covers the central area of Łódź Voivodeship.

As of 2016 weekly mass attendance was 23.4% of the archdiocese's Catholic population, making it the second least devout diocese in Poland after the Archdiocese of Szczecin-Kamień (22.7%).

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