The Symphony No. 5, Washington Mosaics, Op. 57, is an orchestral composition by the Finnish composer Aulis Sallinen, who wrote the piece from 1984–85, revising the finale in 1987. The National Symphony Orchestra, the commissioning institution, premiered the work in 10 October 1985 at the Kennedy Center in Washington, D.C., under the direction of its music director, Mstislav Rostropovich.