Katie O'Malley

In October 2021, after Maryland Attorney General Brian Frosh announced he would not seek a third term, O'Malley announced she would be retiring as a judge, fueling speculation that she would run for Maryland Attorney General. Her final day as a judge was October 29, 2021. If elected, she would had held the same office that her father held for 20 years. She announced her candidacy in the 2022 Maryland Attorney General election on December 1, 2021. On July 19, 2022, O'Malley lost the Democratic primary, she was defeated by U.S. Congressman Anthony Brown, her husband's former running mate and Lieutenant Governor.

As a judge, O'Malley was a leader on addressing domestic violence through the court system and with protective orders. She also served on the steering committee of the Maryland/Leningrad Region Rule of Law Partnership. In her combined role as first lady, she welcomed judges' delegations annually from Saint Petersburg, Russia, to Government House for receptions and working dinners. In February 2008, O'Malley and others led a reciprocal visit to Saint Petersburg to work on domestic-violence prevention and prosecution. In 2019, O'Malley joined the Open World Leadership Center Board of Trustees, supporting the organization's mission of promoting the rule of law and democratic values around the globe.

O'Malley became First Lady of Maryland in January 2007 when her husband took office as governor. As a judge, she was prohibited by the judicial code of conduct from joining her husband in partisan campaign events. Martin O'Malley's governorship ended in January 2015.

Upon graduation from law school in 1991, O'Malley accepted a job as an assistant state's attorney in Baltimore County, serving in that office until her appointment as a judge. In the state's attorney's office, she prosecuted homicides and other violent felonies before serving as the chief of the white collar/economic crimes unit from 1999 to 2001. On August 16, 2001, then-Governor Parris Glendening appointed her to a 10-year term, expiring in 2011, as an Associate Judge for the First District Court of Maryland, encompassing the city of Baltimore. She was re-appointed to additional 10-year terms in both 2011 and in 2021.

While attending law school, she met University of Maryland law student Martin O'Malley, and they wed in 1990. She and her husband have four children.

Catherine Curran O'Malley (born August 18, 1962) is an American jurist who served as Baltimore City District Court judge. She is the wife of Martin O'Malley, a former governor of Maryland and mayor of Baltimore, as well as a 2016 presidential candidate. She was an unsuccessful candidate for Maryland Attorney General in the 2022 election.