John D. Alderson (November 29, 1854 – December 5, 1910) was a lawyer and Democratic politician from West Virginia who served as a United States representative from West Virginia.

After studying law, he was admitted to the bar in 1876 and entered practice at Nicholas County Court House.

He was appointed prosecuting attorney for the counties of Nicholas and Webster in 1876.

He was subsequently elected prosecuting attorney for these counties and then re-elected in 1880 and 1884, serving until January 1, 1889.

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