| Idle | Frank | Variations on an Original Theme |  |
| Ikebe | Shin-ichiro | Quatrevalence |  |
| Ikeda | Tetsumi | Cle des Champs for piano, violon, alto, violoncelle (1992) |  |
| Illes | Marton | Torso IV (2007) |  |
| Imbrie | Andrew | Pianoquartet (1998) |  |
| Ince | Kamran | Fantasia of a Sudden Turtle (1990) |  |
| Ince | Kamram | Far Variations (2009) |  |
| Indy | P.M.Th. Vincent d\' | Opus 7 in a (1878) |  |
| Indy | P.M.Th. Vincent d\' | Scherzo in D (1871). No opusnr. |  |
| Inigo | Frederique | Matin avec vue, pour violon, alto, violoncelle et piano (1998) |  |
| Ippolitow-Iwanow | Mikhael M. | Opus 9 in As (1895) |  |
| Ippolitow-Iwanow, bew.Kumpulainen | Mikhaël M. | Ich werd' dein Lächeln nie vergessen |  |
| Ireland | Robin | Air on a stroud hill (2009)(1.52 minutes) |  |
| Irsai | Jevgenij | BACH (2000) |  |
| Irsai | Jevgenij | BACH-ACH-CH-CHA-CHAOS ( before 2000) |  |
| Ischenko | Yuri Y. | Piano Quartet (1977) |  |
| Ives | Charles | In Le Con Moto et Al Piano Quartet |  |
| Iwanek | Igor | Rozmemlane Wybebeszenie Scordatura (2010) |  |
| Iyer | Vijay | The Law of Returns for piano quartet (2016) |  |
| Izumi | Yusuke | Piano Quartet no. 1 (1996) |  |