Swiss symphony orchestra located in Biel (Bienne).
Founded in 1969 as , the first chief conductor was , followed by , , , Hans Urbanek, and since 2012 by . The orchestra plays concerts as well as opera at the theatre in Biel and Solothurn. In 1989 the orchestra was renamed into , while in 2013 the name was changed again to Sinfonie Orchester Biel Solothurn.