Jurisdiction | Cathedral | Type |
| Bangkok | Cathedral of the Assumption of the Blessed Virgin Mary  Bangkok, Krung Thep Maha Nakhon Bangkok, Thailand  |  Cathedral |
| Chanthaburi | Cathedral of the Immaculate Conception Chanthaburi, Chanthaburi, Thailand | Cathedral |
| Chiang Mai | Sacred Heart Cathedral Chiang Mai, Chiang Mai, Thailand | Cathedral |
| Chiang Rai | Cathedral of the Nativity of Our Lady Chiang Rai, Chiang Rai, Thailand | Cathedral |
| Nakhon Ratchasima | Our Lady of Lourdes Cathedral Nakhon Ratchasima, Nakhon Ratchasima, Thailand | Cathedral |
| Nakhon Sawan | St. Ann Cathedral Nakhon Sawan, Nakhon Sawan, Thailand | Cathedral |
| Ratchaburi | Nativity of Our Lady Cathedral Amphoe Bang Khonthi, Samut Songkhram, Thailand | Cathedral |
| Surat Thani | Cathedral of St. Raphael the Archangel Surat Thani, Surat Thani, Thailand | Cathedral, Parish |
| Thare and Nonseng | St. Michael the Archangel Cathedral Tha Rae, Sakon Nakhon, Thailand | Cathedral |
| Thare and Nonseng | St Anne’s Co-Cathedral Mueang Nakhon Phanom, Nakhon Pathom, Thailand |  Co-Cathedral |
| Ubon Ratchathani | Cathedral of the Immaculate Conception Ubon Ratchathani, Ubon Ratchathani, Thailand | Cathedral |
| Udon Thani | Cathedral of Our Mother of Perpetual Help Udon Thani, Udon Thani, Thailand | Cathedral |
