Margaret Ann Ruhl (born September 2, 1956) is a Republican politician who formerly represented the 68th District of the Ohio House of Representatives, which includes Knox County and the eastern portion of Delaware County.

A lifelong resident of Knox County, Ohio, Ruhl graduated from Fredericktown High School.

She went on to begin a career in business and accounting, and eventually served as city auditor for Mount Vernon, Ohio, from 1983 to 1995.

When Representative Thom Collier was term limited from the Statehouse in 2008, Ruhl ran for the open seat.

Again Ruhl faced a primary challenge by Patrick Quinn, but again won with 64.59% of the vote.