| Name | Una Voce Japan ( UVJ ) |
| Established in | March, 2011 |
| Representative | Shinsuke Yoshikawa ( Archdiocese of Tokyo) |
| Number of members | 28 |
| Aim | Safeguarding and promoting the Traditional Latin Mass( Mass according to Missale Romanum edited by Pope John XXIII in 1962 , Divine Office and Gregorian chants and sacred polyphony in the Roman Catholic Church in Japan. |
| Chaplin | Canon Raphael Ueda ( Institute of Christ the King Sovereign Priest, living in San Jose, USA) |
| Patron | St. Joseph and 26 Martyrs of Japan |
| URL | uvj.jp |
| Legal Status | - In Japanese civil law, an association without rights
- In Church law, an association of the faithful according to article 215, but without juridical person.
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