The Co-Cathedral of St. John the Evangelist is a cathedral of the Catholic Church in Rochester, Minnesota, United States.

Plans for the present church were completed by New Ulm architect Edward F. Wirtz, and construction began in 1955.

On March 27, 2018, Pope Francis elevated the church to be the co-cathedral of the newly renamed Diocese of Winona–Rochester.

The new designation reflects the economic growth of the city of Rochester and the demographic changes that have occurred since the diocese was founded in 1889.

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