Philharmonisches Orchester Freiburg is the resident orchestra of the Theatre Freiburg in Freiburg im Breisgau, Germany, with origins in the city's 19th-century musical institutions and a career centred on symphonic, operatic and ballet performance. Its repertoire and activities range from classical and romantic symphonies to contemporary commissions and stage works, and it forms part of Freiburg's regional cultural infrastructure through concerts, collaborations and educational projects.