James A. McKenzie (January 27, 1862 – February 20, 1918) was an American businessman and politician.
Born in Vernon, Wisconsin, McKenzie went to Carroll College (now Carroll University) and was in the general merchandise business.
He served a chairman of the Vernon Town Board.
McKenzie served in the Wisconsin State Assembly from 1905 to 1909 and was a Republican.
This article about a Republican Party member of the Wisconsin State Assembly born in the 1860s is a stub.