The Roman Catholic Diocese of Romblon (Latin: Dioecesis Rombloniesis) is a diocese of the Catholic Church in the Philippines.

A constituent of the sui iuris Latin Church, it is a suffragan of the Archdiocese of Capiz.

[2] Erected in 1974, the diocese has experienced no jurisdictional changes in that time.

The diocese is divided into six vicariates and has twenty-four parishes, ministered by thirty priests and one religious brother of the Society of the Divine Word (SVD).

It covers a land area of 1,355 square kilometers (523 sq mi) and has a population of 227,621 of which 87 per cent are Catholics.