Diana Mendley Rauner (born 1961) is an American businesswoman and president of Start Early, a non-profit in Chicago.

[2] Rauner was born and raised in New York City, where she was the youngest of three children in a Reform Jewish home.

"[6] On July 18, 2016, Rauner announced a $15 million renovation project for the Illinois Executive Mansion, with the funding being raised privately.

[7] She serves as president of the Ounce of Prevention Fund, an early-learning advocacy organization.

[9] In June 2016, The Ounce of Prevention joined a lawsuit fund with other social organizations against her husband, the governor, and various state agencies; the lawsuit demanded payment for services rendered by the agencies, many of which had not received payment for over a year.