(Ukrainian: Яцек Пиль; Polish: Jacek Pyl; born 17 August 1962 in Garwolin,[1] Poland) is a Polish-born Ukrainian Roman Catholic prelate, who serves as an Auxiliary bishop of the Roman Catholic Diocese of Odesa-Simferopol and the Titular Bishop of Nova Sinna since 21 October 2006.

Bishop Pyl was born in the Roman-Catholic family in a present-day Masovian Voivodeship.

After graduation of the school education, he joined the Missionary Oblates of Mary Immaculate in 1977;[2] he made a solemn profession on 8 September 1986, and was ordained as priest on 20 June 1988,[3] after graduation of the Major Missionary Oblates Theological Seminary in Obra, Poland and Theological faculty of the Adam Mickiewicz University in Poznań, Poland.

[2] After his ordination he served as an assistant novice master for the Missionary Oblates in Poland from 1988 until 1990, when he has been transferred to Ukraine.

When in 1997 was established the Delegature of Missionary Oblates of Mary Immaculate in Ukraine, he became its first Superior until 2006.