The Roman Catholic Diocese of Incheon () is a diocese of the Latin Church of the Catholic Church located in Incheon, South Korea. The diocese is suffragan to the Archdiocese of Seoul.
On 6 June 1961 Pope John XXIII erected as an Apostolic Vicariate of Incheon. It was elevated to a diocese the next year on 10 March. The seat is Dapdong Cathedral.