John Alexander Floersh (October 5, 1886 – June 11, 1968) was an American bishop of the Roman Catholic Church.

[3] Returning to the United States, he did pastoral work in the Diocese of Nashville for a year before becoming secretary to Archbishop Giovanni Bonzano, the Apostolic Delegate in Washington, D.C.[2] He was named a Monsignor by Pope Benedict XV in 1917.

[3] When the Diocese of Louisville was elevated to the rank of an archdiocese on December 10, 1937, Floersh became its first Archbishop.

He established Bellarmine University, Catholic Charities, annual Corpus Christi processions, and St. Thomas Seminary (which was open from 1952 to 1970).

After forty-three years as head of the Diocese of Louisville, Floersh resigned on March 1, 1967,[3] after Pope Paul VI called for the voluntary retirement of resident bishops older than 75.