Allen Carpenter Beach (October 9, 1825 – October 17, 1918) was an American lawyer and politician from New York.
He was born on October 9, 1825, in Fairfield, Herkimer County, New York, the son of Rev. Allen R. Beach (1797–1879) and Amy Brown Beach (1803–c.1890). He graduated from Union College in 1848, and was admitted to the bar in 1852. His first wife Abby A. Woodruff died in 1856. In 1862, he married Olivia H. Pickering, and they had one daughter, Amy.
Active in politics as a Democrat, Beach served as chairman of the Jefferson County Democratic Committee, and was a delegate to numerous county and state party conventions. Jefferson County was a Republican stronghold, and Beach ran unsuccessfully for several offices, including county judge. He was a delegate to the 1860 and 1876 Democratic National Conventions.
- Life Sketches of Executive Officers and Members of the Legislature of the State of New York by H. H. Boone & Theodore P. Cook (Weed, Parsons & Co., Albany NY, 1870; pg. 15–19)
Stewart L. Woodford
| Lieutenant Governor of New York
John C. Robinson
| Secretary of State of New York
Joseph Bradford Carr
|Party political offices|
Samuel J. Tilden
| New York State Democratic Committee Chairman
September 1874 – September 1875