Brown's Brewery was a brewery located on East Lombard Street in Baltimore, Maryland. In 1813, Mary Pickersgill sewed the famous Star Spangled Banner Flag in one of its malthouses. At the time, the brewery was owned by Baltimore merchant George I. Brown who had bought it from Edward Johnson, the third Mayor of Baltimore. George Brown sold the brewery to Eli Claggett in 1818, and until its final closure in 1879, it was known as Claggett's Brewery. The site once occupied by the brewery was excavated in 1983 as the Baltimore Center for Urban Archeology's first project.