The Baltimore Opera Company (BOC) was an opera company in Baltimore, Maryland, U.S.A., based at the Baltimore Lyric Opera House. On 12 March 2009, the 58-year-old opera company announced plans to pursue Chapter 7 bankruptcy liquidation, the result of the company having filed a petition on 10 December 2008 under Chapter 11 of the U.S. Bankruptcy Code with the United States Bankruptcy Court for the District of Maryland.