The Contrabandista, or The Law of the Ladrones, is a two-act comic opera by Arthur Sullivan and F. C. Burnand. It premiered at St. George's Hall, in London, on 18 December 1867 under the management of Thomas German Reed, for a run of 72 performances. There were brief revivals in Manchester in 1874 and America in 1880. In 1894, it was revised into a new opera, The Chieftain, with a completely different second act.

Sir Arthur Seymour Sullivan was an English composer. He is best known for 14 operatic collaborations with the dramatist W. S. Gilbert, including H.M.S. Pinafore, The Pirates of Penzance and The Mikado. His works include 24 operas, 11 major orchestral works, ten choral works and oratorios, two ballets, incidental music to several plays, and numerous church pieces, songs, and piano and chamber pieces. His hymns and songs include "Onward, Christian Soldiers" and "The Lost Chord".