'Bal Costume, Op. 103' (Dress Ball) is a suite composed by Anton Rubinstein for piano 4 hands. It was first published in 1880 in Berlin, by Bote & Bock, and dedicated to Catherine & Eudoxie Karnowitch. The work consists of 20 movements, some of which were later adapted for solo piano, orchestra, and other instrumental ensembles by other composers.