Patrick Joseph Hayes (November 20, 1867 – September 4, 1938) was an American Catholic prelate who served as Archbishop of New York from 1919 until his death. He was elevated to the cardinalate in 1924.

Patrick Hayes was born in the Five Points section of Manhattan to Daniel Hayes and Mary Gleason. In his own words, Hayes "was born very humble and, I may say, of poor people." Both of his parents were from County Kerry, Ireland, and moved to the United States in 1864. A younger brother, John, was born in 1870. Hayes' mother died in June 1872, and his father later remarried around 1876; a half-sister, Anastasia, was also born that year. At age 15, he was sent to live with his aunt and uncle, who ran a grocery store where Hayes then worked.

After attending La Salle Academy, Hayes studied at Manhattan College, where he excelled at philosophy and the classics and obtained a Bachelor of Arts degree with high honors in 1888. At Manhattan, he also befriended George Mundelein, who would later become Archbishop of Chicago. Hayes then attended St. Joseph's Seminary in Troy.

Hayes was ordained to the priesthood by Archbishop Michael Corrigan on September 8, 1892. He was then sent for further studies at the Catholic University of America in Washington, D.C., earning a Licentiate of Sacred Theology in 1894.

Upon his return to New York City, Hayes was appointed Curate at St. Gabriel's Church on the Lower East Side, where he served under its pastor, John Murphy Farley (whom he would later succeed as Archbishop of New York). Hayes, following Farley's elevation to the episcopacy, served as his private secretary from 1895 to 1903, thereafter he was appointed chancellor of the Archdiocese and Rector of the Cathedral College. He was named Domestic Prelate of His Holiness on October 15, 1907.

On July 3, 1914, Hayes was appointed Auxiliary Bishop of New York and Titular Bishop of Thagaste by Pope Pius X. He received his episcopal consecration on the following October 28 from Cardinal Farley, with Bishops Henry Gabriels and Thomas Cusack serving as co-consecrators, at St. Patrick's Cathedral.

Hayes was later named Vicar Apostolic of Military, USA, on November 24, 1917. Serving as head of the American military ordinariate during World War I, he recruited hundreds of priests as commissioned officers or chaplains. He was also one of the four episcopal members of the executive committee of the National Catholic War Council.

Following the death of Cardinal Farley in September 1918, Hayes was appointed by Pope Benedict XV as the fifth Archbishop of New York on March 10, 1919. He was formally installed as Archbishop on the following March 19. He founded the archdiocesan Catholic Charities in 1920, and subsequently became known as "the Cardinal of Charities." In a 1921 pastoral letter, Hayes strongly condemned abortion, contraception and divorce. He had the first convention of the American Birth Control League raided, and later called its members "prophets of decadence". He welcomed the election of Éamon de Valera as President of the Irish Republic and contributed $1,000 to Sinn Féin.