John Michener Haines (January 1, 1863 – June 4, 1917) was an American politician from the Republican Party.

[1] He completed three years of study at William Penn University in Iowa before withdrawing from school due to poor health.

He also served as deputy clerk of court in Morton County and was elected Registrar of Deeds.

[5] During his administration, a workman's compensation bill was vetoed, and a state board of education was established.

He is interred at the Morris Hill Cemetery, Boise, Ada County, Idaho, United States.