| Type: | Bishop |
| Honorific Prefix: | The Most Reverend |
| Nicolai Dubinin | |
| Honorific Suffix: | O.F.M. Conv. |
| Auxiliary Bishop of Mother of God at Moscow | |
| Church: | Roman Catholic Church |
| Archdiocese: | Mother of God at Moscow |
| See: | Mother of God at Moscow |
| Appointed: | 30 July 2020 |
| Ordination: | 24 June 2000 |
| Ordained By: | Tadeusz Kondrusiewicz |
| Consecration: | 4 October 2020 |
| Consecrated By: | Paolo Pezzi |
| Other Post: | Vice-President of the Union of the European Conferences of Major Superiors (2018–) Titular Bishop of Aquae in Byzacena (2020-) |
| Birth Name: | Nikolai Gennadʹevich Dubinin |
| Birth Date: | 27 May 1973 |
| Birth Place: | Novoshakhtinsk, Rostov Oblast, Russian SFSR |
| Previous Post: | General Custos for the Order of Friars Minor Conventual in Russia (2005–18) |
| Alma Mater: | Rostov State University University of Lublin |
| Coat Of Arms: | Coat of arms of Nicolai Dubinin.png |
| Nationality: | Russian[1] |
| The Most Rev. Msgr Nicolai Dubinin O.F.M. Conv. | |
| Dipstyle: | The Most Reverend |
| Offstyle: | Your Excellency |
| Relstyle: | Monsignor |
| Deathstyle: | n/a |
Nicolai Gennadyevich Dubinin, O.F.M. Conv. (Russian: Николай Геннадьевич Дубинин|Nikolay Gennad'evich Dubinin, pronounced as /ru/; born 27 May 1973) is a Russian Roman Catholic prelate as the Titular Bishop of Aquae in Byzacena and Auxiliary bishop of Roman Catholic Archdiocese of Mother of God at Moscow since 30 July 2020.
Dubinin was born in a family of intelligentsia as the younger among two children in the present day Southern Federal District. His paternal relatives were local Russian Orthodoxes while his maternal relatives were Roman Catholics in Byelorussian SSR. According to the Belarus rules for mixed unions, he had to be christened as Roman Catholic as a second child in a family. Nevertheless, he was "unfairly" christened in the Moscow Patriarchate just like his older sister.[2] By his own admission, “he became a member of the Catholic Church as soon as the opportunity arose, in 1991, at the age of 18”.[3]
After graduation of the school education, joined Faculty of Philology at the Rostov State University (1990–1993), but subsequently entered to the Order of Friars Minor Conventual in 1994; he made a profession on September 8, 1995 and a solemn profession on October 3, 1998, and was ordained as priest on June 24, 2000, after graduation of the Major Franciscan Theological Seminary in Łódź, Poland and Catholic University in Lublin, Poland.
He returned to Russia and began to work in the Franciscan parishes and as superior of the different local Franciscan communities, with the break during 2002–2005, when he studied at the Pastoral Liturgical Institute in Padua, Italy with the licentiate of the Liturgical Theology degree. From 2005 until 2018 he served as a General Custos of the Order of Friars Minor Conventual in Russia and at the same time was a lecturer at the Major Theological Seminary of Mary – the Queen of Apostles in Saint Petersburg, Russian Federation.[4]
On July 30, 2020, he was appointed by the Pope Francis as an Auxiliary Bishop of the Roman Catholic Archdiocese of Mother of God at Moscow and Titular Bishop of Aquae in Byzacena. On October 4, 2020, he was consecrated as bishop by Metropolitan Archbishop Paolo Pezzi and other prelates of the Roman Catholic Church in the Cathedral of the Immaculate Conception in Moscow.