Archbishop Bolesław Twardowski (Ukrainian: Болеслав Твардовський; Polish: Bolesław Twardowski; 18 February 1864 – 22 November 1944) was a Roman Catholic prelate, who served as an Auxiliary Bishop of the Roman Catholic Archdiocese of Lviv and a Titular Bishop of Telmessos from 14 September 1918 until 3 August 1923 and as the Metropolitan Archbishop of the same Archdiocese from 3 August 1923 until his death on 22 November 1944.

After that he continued to study in the Pontifical Gregorian University in Rome, obtaining a Doctor of Canon Law degree.

[2] After returning from Italy, he served as a prefect in Major Roman Catholic Theological Seminary in Lviv and later was appointed as a chancellor of the Metropolitan curia.

On January 12, 1919, he was consecrated as bishop by Metropolitan Archbishop Józef Bilczewski and other prelates of the Roman Catholic Church[1] in the Cathedral Basilica of the Assumption, Lviv.

[2] Archbishop Twardowski died, while in the office, on November 22, 1944, and was buried in the Roman Catholic church of Our Lady of the Gate of Dawn in Lviv, accordingly with his will.