Peter Buell Allen (November 24, 1775 – June 13, 1833) was a politician and military commander in New York State in the early 1800s and a pioneer of Vigo County and Terre Haute, Indiana.

In 1812 Peter Allen served in the Ontario County Legislature before being commissioned in the New York State Militia as a Commanding Lieutenant Colonel in the 22nd Infantry Regiment.

[5] Lieutenant Colonel Allen was captured by enemy forces on October 13, 1812 at the Battle of Queenston Heights and was honor bound to not take up arms until he had been informed of a prisoner swap that released him.

After returning home from the War of 1812, Allen was elected to the New York State Assembly as the representative from Ontario County (Democratic Republican) in the 38th and 39th session.

As soon as the election was confirmed by the legislature it began being contested until on February 6, 1816 when Henry Fellows won and was seated giving the Federalist Party a 1-seat majority.

[7] In 1820 Allen did not seek reelection to the Indiana House of Representatives and the election was won by George R. C. Sullivan, Robert Sturgus, John MacDonald.