John Patterson Green (April 2, 1845 – September 1, 1940) was an American attorney, politician, public servant, and writer. He was among the first African Americans to hold public office in Cleveland, Ohio. A Republican, he was elected as a Justice of the Peace in 1873. He served in the Ohio House of Representatives in 1882. In 1891, he was elected to the Ohio Senate, the first African American state senator in Ohio. Green introduced the legislation that established Labor Day in Ohio as a state holiday.