Patrick F. Trainor (January 4, 1863 Glasgow, Scotland – December 25, 1902 Albany, New York) was an American politician from New York.
The family emigrated to the United States when Patrick was still a child. He attended St. Michael's Parochial School and 35th Street Public School in New York City, and then worked for the American District Telegraph Company. Later he became the manager of the Boston and Ohio Telegraph Company's New York City branch, and then was assistant to the General Manager of the company, at Washington, D.C. He returned to New York City in 1885, and began to study law.
Trainor was a member of the New York State Assembly in 1894 (New York Co., 17th D.), 1896, 1897, 1898, 1899 and 1900 (all five New York Co., 13th D.). He was admitted to the bar in 1899.
He was a member of the New York State Senate (16th D.) in 1901 and 1902. In November 1902, he was re-elected to the State Senate, but died a few days before the next term began.
"Suffering from an insidious nervous disease", he went to take the water cure at Clifton Springs, and in August 1902 went to Albany where he died on Christmas Day at the Ten Eyck Hotel. He was buried at the Calvary Cemetery in Queens.