Teatr Wielki w Łodzi (The Grand Theater in Łódź) is an opera house in Łódź, Poland. It is the largest theatre in the city, specialising in opera, operetta and ballet. It was opened on 19 January 1967 and by the end of 2005 it had staged 240 premieres. The theatre is one of the most important operatic venues in Poland. Its director is Kazimierz Kowalski.
The house has staged works by composers of the past (including Tchaikovsky, Mozart, Verdi and Wagner) as well as contemporary figures (such as Krzysztof Penderecki and Bogdan Pawłowski). Its productions have travelled abroad throughout Europe and the United States. World-famous artists, such as Victoria de los Ángeles and Andrea Bocelli, have appeared on its stage. Directors who have worked there include Adam Hanuszkiewicz and Ryszard Peryt.