Patrick Henry McCarren (July 8, 1849 East Cambridge, Massachusetts – October 23, 1909 Brooklyn, New York City) was an American politician from New York.
The family removed to Brooklyn when Patrick was still a child. He attended Public School Nr. 17 in Brooklyn. Then he became a cooper, and later an oil inspector. He married Kate Hogan (died 1883), a school teacher, and they had five children who all died in infancy.
He was a member of the New York State Assembly (Kings Co., 6th D.) in 1882 and 1883. Then he studied law, and was admitted to the bar, but did not open a law office, and very rarely appeared in court.
He was again a member of the State Assembly in 1889; and a member of the New York State Senate (4th D.) from 1890 to 1893, sitting in the 113th, 114th, 115th and 116th New York State Legislatures.
He was again a member of the State Senate (7th D.) from 1896 until his death in 1909, sitting in the 119th, 120th, 121st, 122nd, 123rd, 124th, 125th, 126th, 127th, 128th, 129th, 130th, 131st and 132nd New York State Legislatures.