The Symphony No. 98 in B♭ major, Hoboken I/98, is the sixth of the twelve London symphonies (numbers 93–104) composed by Joseph Haydn. It was completed in 1792 as part of the set of symphonies composed on his first trip to London. It was first performed at the Hanover Square Rooms in London on 2 March 1792. Some musicologists and historians[who?] interpret this symphony as Haydn’s tribute to his friend Mozart who had died on 5 December 1791.