Patrick Augustine Feehan (August 28, 1829 – July 12, 1902), was an Irish-born American Catholic prelate who served as the first archbishop of Chicago in Illinois from 1880 until his death in 1902. He previously served as bishop of Nashville in Tennessee from 1865 to 1880.

Patrick Feehan was born on August 28, 1829, in Killenaule, County Tipperary, in Ireland, to Patrick and Judith (Cooney) Feehan. His father was a gentleman farmer. At age ten, Feehan was sent to live with his paternal grandfather to attend school in Fethard. He returned to Killenaule two years later when a school opened there. Feehan learned to speak French fluently and was a dedicated reader. At age 14 he started studying Gaelic.

In 1845, at age 16, Feehan entered Castleknock College in Dublin as an ecclesiastic student, where he befriended the future Irish statesman Charles Russell. By that point, Feehan knew that he wanted to become a priestIn January 1847, Feehan started his studies for the priesthood at St Patrick's College in Maynooth, the major seminary in Ireland. In 1850, his family emigrated to the United States, sailing from Dublin.

Archbishop Peter Kenrick of the Archdiocese of St. Louis in the United States had opened the Carondelet Seminary, a major seminary in St. Louis, Missouri. While in Ireland, he recruited Feehan to come to his archdiocese. Although Feehan was on track to become a professor at St. Patrick, the college agreed to his departure. In 1852, Feehan left for the United States.

Feehan was ordained a priest in St. Louis for the Archdiocese of St. Louis by Kenrick on November 1, 1852. After his ordination, Kenrick assigned Feehan to teach at the diocesan seminary. In July 1853, he was assigned to St. John's Parish in St. Louis.

During a cholera epidemic in St. Louis that year, Feehan spent many hours tending the sick and blessing the dead. He volunteered to place the dead in coffins. On another occasion, Feehan encountered a young girl with smallpox who had been abandoned by her relatives. He found a woman who already had that disease to foster the child.

In 1854, Feehan was appointed president of Carondelet Seminary. He was also assigned to serve as chaplain to the Sisters of St. Joseph at their convent on the seminary property. In 1858, Feehan was appointed pastor of St. Michael's Parish in St. Louis. In 1859, he became pastor of Immaculate Conception Parish in St. Louis. He established a chapter of the Society of Saint Vincent de Paul to aid the poor. He would personally visit all the poor and the sick in the parish. While visiting the jail, he encountered a man who had broken into the Immaculate Conception rectory and stole a watch and money from Feehan. The inmate expressed his remorse and said that he want to move west to find a job. Feehan gave him $50. Two years later, the man sent Feehan a check for $75 and his thanks.

During the American Civil War, the Sisters of Charity were put in charge of a military hospital in St. Louis, where Feehan spent long hours comforting the sick and wounded. After the Battle of Shiloh in Tennessee on April 6 to 7, 1862, boatloads of wounded Union Army soldiers arrived in St. Louis. For three straight days, Feehan moved along the wharf and the stretchers laid in rows on the street, administering last rites to dying soldiers. Some of them were Protestants who requested baptism before they died.