John M. Pattison (June 13, 1847 - June 18, 1906) was a Democratic politician from Ohio. Pattison was the 43rd Governor of Ohio.
Pattison was born near Owensville, Ohio. He joined the Union Army during the American Civil War in 1864. After the war ended, Pattison attended Ohio Wesleyan University, graduating in 1869. After studying law, he was admitted to the bar in 1872. Pattison briefly served in the Ohio House of Representatives in 1873 before working as an executive at an insurance company. Pattison was elected to the United States House of Representatives in 1890 after briefly serving in the Ohio State Senate. He served one term from 1891-1893, but lost an 1892 bid for re-election. Pattison was elected governor in 1905. He entered office in January 1906 and served until his death in June.