John Waterman Okey (January 3, 1827 – July 25, 1885) was a judge and legal author in the U.S. State of Ohio who was an Ohio Supreme Court Judge 1878–1885.

He was a member of the Democratic Party Okey was born in Monroe County, Ohio near Woodsfield.

He also authored Okey and Miller's Municipal Law with S. A.

[1] In 1877, Okey defeated Republican William Wartenbee Johnson for election to the Ohio Supreme Court.

[4] He was buried at Spring Grove Cemetery in Cincinnati, Ohio.