Edward John Horan (October 26, 1817 – February 15, 1875) was a Canadian Roman Catholic priest and Bishop of Kingston from 1858 to 1875.

His parents served on the committee of management of Saint Patrick's, an English-speaking chapel of Notre Dame.

He made field trips to L'Isle-aux-Coudres in 1849, and to Baie-Saint-Paul in 1850, and worked closely with Louis-Ovide Brunet and Elkanah Billings.

He discovered a species of Trilobite on a trip to Cap Tourmente; Billings named it Acidaspis Horani.

[7] He died on February 15, 1875, and was laid to rest with the previous Bishops of Kingston in the vault below St. Mary’s Cathedral.