| Tumauini Church | |
|---|---|
| Saint Matthias Parish Church | |
Iglesia Parroquial de San Matías (Spanish) | |
 Church façade and bell tower in 2017 | |
.svg)  Tumauini Church Location in Luzon .svg) Tumauini Church Location in the Philippines | |
| 17°16′31″N 121°48′26″E / 17.275395°N 121.807124°E | |
| Location | Tumauini, Isabela |
| Country | Philippines |
| Denomination | Roman Catholic |
| History | |
| Status | Parish church |
| Founded | 1707 |
| Founder(s) | Francisco Nuñez, O.P |
| Dedication | Saint Matthias |
| Architecture | |
| Functional status | Active |
| Heritage designation | National Cultural Treasure |
| Architect(s) | Fr. Domingo Forto |
| Architectural type | Church building |
| Style | Baroque |
| Groundbreaking | 1783 |
| Completed | 1805 |
| Administration | |
| Province | Isabela |
| Archdiocese | Tuguegarao |
| Diocese | Ilagan |
| Clergy | |
| Archbishop | Most Rev. Sergio L. Utleg, D.D |
| Bishop(s) | Most Rev. David William V. Antonio, D.D. |
| Priest(s) | Very Rev. Gregorio Marvic C. Uanan, JCD, JV |
Saint Matthias Parish Church, commonly known as Tumauini Church, is a Roman Catholic church in the municipality of Tumauini, Isabela, Philippines, within the jurisdiction of the Diocese of Ilagan. It became a separate parish independent from Cabagan under the advocacy of Saint Matthias in 1751.
The church, known for its brick, Baroque-style architecture, was declared a National Cultural Treasure by the National Museum of the Philippines. Together with the churches of Boljoon, Guiuan, Loboc and Lazi, the Tumauini Church has been considered for the UNESCO World Heritage Tentative List since 2006 under the collective group of Baroque Churches of the Philippines (Extension).