Reuben Knecht Bachman (August 6, 1834 – September 19, 1911) was a Democratic member of the U.S. House of Representatives from Pennsylvania.

Reuben K. Bachman was born in Williams Township, Northampton County, Pennsylvania.

He entered the mercantile and milling business in Durham, Pennsylvania.

[1] Bachman was elected as a Democrat to the Forty-sixth Congress.

He engaged in the lumber business and the manufacture of builders' millwork at Riegelsville, Pennsylvania, and Phillipsburg, New Jersey.