A piano quartet is a type of musical piece meant for small groups, played by a piano and three other instruments. The other instruments are often a string trio, which includes a violin, viola, and cello.

Many composers wrote piano quartets for this standard group, including Wolfgang Amadeus Mozart, Robert Schumann, Ludwig van Beethoven, Johannes Brahms, Antonín Dvořák, and Gabriel Fauré. In the 20th century, composers also created piano quartets with different combinations of instruments. For example, Anton Webern wrote a quartet in 1930 for piano, violin, clarinet, and tenor saxophone. Paul Hindemith and Olivier Messiaen each wrote quartets in the 1930s and 1940s for piano, violin, cello, and clarinet. An earlier example is a quartet from 1819 by Franz Berwald, written for piano, horn, clarinet, and bassoon.

A rare type of piano quartet uses two pianos, with two players at each piano. This format is sometimes called "eight-hand piano" or "two piano eight hands." This style was popular in the late 19th century before recordings were common, as it allowed people to hear symphonic music in homes or music halls with two pianos and four musicians. Many famous works by composers like Mozart, Schumann, Brahms, and Dvořák were rewritten for two pianos. Most eight-hand piano music is made by arranging or rewriting existing pieces.

List of works

The following is a list of piano quartets composed by both well-known and less well-known composers. The list is organized by the composers' last names.

List of ensembles

List of Piano Quartets
• Fauré Quartet
• Domus Quartet
• Garth Newel Piano Quartet
• Mariani Klavierquartett
• Tunnell Piano Quartet
• Copenhagen Piano Quartet
• Bohuslav Martinů Piano Quartet
• Bartholdy Piano Quartet
• Menuhin Festival Piano Quartet
• Berlin Piano Quartet
• Ames Piano Quartet
• Mozart Piano Quartet
• Amara Piano Quartet
• Frith Piano Quartet
• Ax, Ma, Laredo & Stern