The Roman Catholic Diocese of Impfondo () is a Catholic diocese located in the town of Impfondo in the ecclesiastical province of Owando in the Republic of the Congo.
On 30 October 2000, Pope John Paul II established the Prefecture Apostolic of Likouala from the Diocese of Ouesso. It was elevated to a diocese on 11 February 2011 by Pope Benedict XVI.
Prefect of Likouala
Bishop of Impfondo