The Philadelphia Grand Opera Company was the name of four different American opera companies active at the Academy of Music in Philadelphia, Pennsylvania during the twentieth century. The last and best known of the four was founded in November 1954 with the merger of the Philadelphia Civic Grand Opera Company and the Philadelphia La Scala Opera Company. That company in turn merged with the Philadelphia Lyric Opera Company in 1975 to form the Opera Company of Philadelphia. Of the three earlier companies, only one lasted beyond one season; a company founded in 1926 which later became associated with the Curtis Institute of Music in 1929. That company closed its doors in 1932 due to financial reasons during the Great Depression.