This is a list of piano trios by Joseph Haydn, including the chronological number assigned by H. C. Robbins Landon and the number they are given in Anthony van Hoboken's catalogue of his works. (Hoboken's listings of Haydn compositions are divided by musical genre, and the piano trios as a category are grouped under the Roman numeral prefix XV.) Haydn's early trios are considered minor works and are seldom played except in the context of complete editions. In contrast, the later trios, starting in the mid-1780s, reflect the composer's full musical maturity and are greatly admired by critics.