John McKinney (1803July 10, 1870) was a Michigan politician.
McKinney was born on 1803 in Pennsylvania. McKinney moved to Michigan in 1837, where he settled in Van Buren County.
On November 1, 1847, McKinney was elected to the Michigan House of Representatives where he represented the Van Buren County district from January 3, 1848, to April 3, 1848. On November 6, 1848, McKinney was elected to the Michigan Senate where he represented the 4th district from January 1, 1849, to April 2, 1849. On November 5, 1849, McKinney was elected to another term in the Michigan Senate where he again represented the 4th district from January 7, 1850, to April 21, 1850. McKinney was a Democrat before 1854, but afterwards, McKinney was a Republican. McKinney served as Michigan Secretary of State from 1855 to 1858. McKinney served as Michigan State Treasurer from 1859 to 1860.
McKinney died in Van Buren County on July 10, 1870.