All instruments A–Z
- Ilimba
- Ilu
- Imperial Bösendorfer
- Imzad
- In-ear monitor
- Inanga
- Indian harmonium
- Indirectly struck idiophone
- Inline chromatic harp
- Instrument 1
- Ipu
- Irish bouzouki
- Irish flute
- Isomorphic keyboard
- Istarski mih
- Jackson Dinky
- Jackson Kelly
- Jackson Soloist
- Jadagan
- Jal tarang
- Jam block
- Janggu
- Jankó keyboard
- Janzi
- Jarana huasteca
- Jarana jarocha
- Jawbone
- Jazz guitar
- Jazzophone
- Jetigen
- Jew's harp♪
- Jhyali
- Jhyamta
- Jiegu
- Jim Root Telecaster
- Jing
- Jingle♪
- Jingle bell♪
- Jouhikko
- Junggeum
- Junjung
- Kaba gaida
- Kabosy
- Kacapi♪
- Kafir harp
- Kagul
- Kagura suzu
- Kakaki
- Kakko
- Kalaleng
- Kalatalo
- Kalimba♪
- Kalyuka
- Kamancheh
- Kane
- Kangling
- Kanjira
- Kankara sanshin
- Kannel
- Kantele♪
- Karamuza
- Karatalas
- Karinding
- Karnal
- Kashaka
- Kaval
- Kawala
- Kayamb
- Kazoo♪
- Kebero
- Kecer♪
- Keluri
- Kemanak
- Kemenche
- Kemençe of the Black Sea
- Kempul♪
- Kendang♪
- Kendara
- Kenong♪
- Kepyak
- Keyboard amplifier
- Keyboard bass
- Keyboard glockenspiel
- Keyboard instrument
- Keyed bugle
- Keyed trumpet
- Khaen
- Khamak
- Khartal
- Khim
- Khloy
- Khlui
- Khol
- Khong wong lek
- Khong wong yai
- Khonkhota
- Khromka
- Khushtar
- Khuuchir
- Kinnari veena
- Kinnor
- Kirikoketa
- Kissar
- Kithara
- Kkwaenggwari♪
- Klaxon♪
- Klon Centaur
- Klong khaek
- Klong yao
- Klopotec♪
- Kobyz
- Kobza
- Kokle
- Kokyū
- Kolintang
- Kolitong
- Kologo
- Kombu
- Kompang
- Komuz
- Koncovka
- Kong ring
- Kong toch
- Kong von thom
- Konghou
- Kontigi
- Korean barrel drum
- Korean drum
- Korean wind chime
- Korg Electribe EM-1
- Korg M1
- Korg Mini Pops
- Korg Minilogue
- Korg Monologue
- Korg MS-10
- Korg MS-20
- Korg Polysix
- Korg PS-3300
- Korg Trident
- Korg Volca♪
- Kortholt
- Koto♪
- Kotsuzumi
- Koudi
- Kouxian
- Kovalevskaya Top
- Kozobas
- Kpanlogo♪
- Kraakdoos
- Krachappi