J. Berry King was an American politician who served as the 5th Attorney General of Oklahoma between 1929 and 1935.

He enlisted during World War I as a private after 22 in months he left the United States Army as a major and judge advocate general.

After the war he moved to Muskogee, Oklahoma, and opened his own law practice.

Woodrow Wilson appointed him U.S. Attorney for the Eastern District of Oklahoma.

He ran in the 1934 Oklahoma gubernatorial election, losing the Democratic primary.