John F. O'Brien

John F. O'Brien (October 9, 1859 – April 23, 1927) was an American businessman and politician. He was Secretary of State of New York from 1903 to 1906.

Life and career O'Brien was born in Fort Edward, Washington County, New York, on October 9, 1859, the son of James O'Brien. He attended the public schools and Fort Edward Collegiate Institute, and taught school for a year. Then he entered business, and in 1888 he succeeded his brother Edward in the wholesale commission flour business at Plattsburgh. In 1897, he formed with his partner George C. Kellogg the O'Brien & Kellogg Dock and Coal Company, and acquired control of the docks and waterfront at Plattsburgh, conducting the largest wholesale business of flour, coal, feed and grain in Northern New York.

He was a member of the New York State Assembly (Clinton Co.) in 1901 and 1902. He was Secretary of State of New York from 1903 to 1906, elected at the New York state election, 1902 and the New York state election, 1904 but defeated for re-election at the New York state election, 1906.

He was an alternate delegate to the 1920 Republican National Convention, and a delegate to the 1924 Republican National Convention. He was President of the Plattsburgh National Bank and Trust Company.