Henry Clay Allen (November 4, 1844 – June 5, 1925) was an American politician and farmer from Virginia.

He served as a member of the Virginia House of Delegates, representing Pittsylvania County, from 1897 to 1898.

[1][2] Allen enlisted in March 1862 as a private in the 38th Virginia Infantry Regiment, Pickett's division, of the Confederate States Army in the Civil War.

Allen put forward a resolution in the 1897–98 session for the oyster industry to pay revenue to the state of Virginia.

They had nine children, including James R., Henry E., Mrs. R. A. Terry, Mrs. O. C. Hoover, Mrs. B. L. Crowe, Raleigh C. and Mrs. T. B. Ruddick.