Simon Seibert (September 12, 1857 Buffalo, Erie County, New York – 1917) was an American politician from New York.
He attended the public schools. In 1893, he became a clerk in the City Treasurer's office.
Seibert was a member of the New York State Assembly (Erie Co., 2nd D.) in 1894 and 1895.
He was a member of the New York State Senate (48th D.) from 1896 to 1898, sitting in the 119th, 120th and 121st New York State Legislatures.
He was an alternate delegate to the 1896 Republican National Convention; and a delegate to the 1900 Republican National Convention.
Seibert was a presidential elector in the 1904 presidential election.[1]
He was buried at the Forest Lawn Cemetery, Buffalo.