Mary Manross is an American politician who served as the 10th Mayor of Scottsdale, Arizona.

First elected in June 2000 until September of 2009, she served two terms and lost her campaign for a third term as mayor in the November 2008 runoff mayoral election to her opponent, former Certified Public Accountant and businessman and former city councilman Jim Lane.

Manross was endorsed by both the Democratic governor Janet Napolitano and the Republican Senator John McCain, and the Scottsdale Area Chamber of Commerce as well as the Sierra Club.

Prior to the challenge from Jim Lane, her party affiliation was not an impediment in the conservative, largely Republican city of Scottsdale.

[6][7] As mayor, Manross was instrumental in leading the city council to approve workplace protections for LGBT employees.