John Charles McKenzie (February 18, 1860 – September 17, 1941) was a U.S. Representative from Illinois.

He was admitted to the bar in 1890 and commenced the practice of his profession in Elizabeth, Illinois.

He was appointed in 1925 a member of the commission to report the most practical method of utilizing the nitrate plant at Muscle Shoals, Alabama.

He resumed the practice of his profession in Elizabeth, Illinois, until his death in that city on September 17, 1941.

This article incorporates public domain material from the Biographical Directory of the United States Congress