| Parish Churches | | Hosur |
- Sacred Heart Church, Hosur
- Our Lady of Lourdes Church, Sipcot, Hosur
- St. Therese of the Child Jesus Church, Divine Nager, Hosur
- Our Lady of Good Health, Mathigiri
- Our Lady of Help, Bagalur
- Our Lady of Vailankanni, Shoolagiri
- St. Antony Church, Onnalvadi
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| Denkanikottai |
- John de Britto Church, Sesurajapuram
- Little Flower Church, Denkanikottai
- Our Lady of Rosary Church, Averipally
- Sacred Heart Church, Madhagondapalli
- Sacred Heart Church, Kelamangalam
- Our Lady of Refuge, Adaikalapuram
- Immaculate Conception Church, Christupalayam
- Our Lady of Lourdes Church, Sollepuram
- St. Paul the Hermit Church, Dhinnur
- Christ the King Church, Dasarapalli
- St. Francis Xavier Church, Kembathalli
- Our Lady of Queen of Heaven, Gopasandram
- Our Lady of Lourdes, Rayakottai
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| Krishnagiri | |
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| Dharmapuri |
- Our Lady of Lourdes Church, Nellimarathupatti
- Sacred Heart Cathedral, Dharmapuri
- Infant Jesus Church, Selliampatti
- Queen of Angels Church, Kadagathur
- St. Sabastian's Church, Poolapatti
- St. Francis Xavier Church, Kovilur
- St. Francis Xavier Church, Kethanahalli
- Our Lady of Vailankanni, Savadiyur
- Christ the King Church, Palacode
- Our Lady Of The Falls Church, Ootamalai
- St. Antony Church, Billgundala
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| Harur | |
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