Jo Ann M. Johnson (born April 24, 1949) is an American politician.

Jo Ann Dinkla graduated from Adair-Casey High School in 1967, and earned a bachelor of arts in education from the University of Northern Iowa in 1971.

That year, she married Craig Douglas, with whom she raised a daughter and a son.

[1] Jo Ann Douglas worked as a farmer, teacher and coach, served on the Adair-Casey school board and the Adair County Republican Central Committee, and was a member of Jim Ross Lightfoot's campaign staff from 1984 to 1990.

Johnson stepped down from the Iowa Senate on January 22, 2002, and David Lord won a special election to serve the remainder of Johnson's term in office.