All instruments A–Z
- Mizwad
- Modular synthesizer
- Moko drums
- Molinukai
- Molo
- Monkey stick
- Monochord♪
- Monome
- Monotron
- Monsoon♪
- Moodswinger
- Moog Grandmother
- Moog Guitar
- Moog Liberation
- Moog Little Phatty
- Moog Mother-32
- Moog Opus 3
- Moog Prodigy
- Moog Rogue
- Moog Satellite
- Moog Sonic Six
- Moog Sub 37
- Moog synthesizer
- Moog Taurus
- Moog Werkstatt-Ø1
- Moogerfooger
- Moraharpa
- Morin khuur
- Morsing
- Mouth organ
- Mouth-bow
- Moving iron speaker
- Mridangam
- Muchosa
- Mukkuri
- Multi-neck guitar
- Multi-scale fingerboard
- Multimoog
- Murasu
- Musette de cour
- Music box♪
- Music Man StingRay
- Music Man StingRay 5
- Music sequencer♪
- Music tracker
- Musical bow♪
- Musical clock
- Musical instruments of Georgia
- Musical jug
- Musical keyboard
- Musical leaf
- Musical saw♪
- Mute cornett
- Mute violin
- Mvet
- Mélophone
- Müsa
- Nabal
- Nadaswaram♪
- Nafir
- Nagak
- Nagara
- Nail violin
- Nakara
- Naqara
- Naqareh
- Naqus
- Native American flute
- Natural brass instruments
- Natural horn
- Naumati baaja
- Neigh♪
- Neo-Bechstein
- Nepalese sarangi
- Neumann CMV3
- Neumann U 47
- Neumann U 87
- Ney
- Ngoma drums♪
- Ngoma lungundu
- Ngoni
- Nocaster
- Nodo
- Nohkan
- Noise-cancelling headphones
- Nord Lead
- North Drums
- Northumbrian smallpipes
- Nyatiti
- Nyckelharpa♪
- Nével
- Oberheim DSX
- Oberheim Matrix synthesizers
- Oboe♪
- Oboe d'amore
- Oboe da caccia
- Obokano
- Ocarina♪
- Octave mandolin
- Octavina
- Octoban
- Octobass
- Octocontra-alto clarinet
- Octophone
- Odrecillo
- Olifant
- Omnichord
- Onavillu
- Ondes Martenot
- Ondioline
- Oopoochawa
- Ophicleide
- Orchestrion
- Organ♪
- Organ flue pipe scaling
- Organ manual
- Organistrum
- Organum (instrument)
- Orpharion
- Orphica
- Orthotonophonium
- Orutu
- Otamatone♪
- Ottu
- Oud♪
- Oval spinet
- Ovation Deacon
- Overtone flute
- P-90
- Padayani thappu
- PAF
- Pahu
- Pahū Pounamu
- Paiban
- Paidi
- Paila criolla
- Paixiao
- Pakhavaj
- Palendag
- Paleolithic flute
- Palitos
- Pamiri rubab
- Pan flute
- Panchamukha vadyam
- Panche baja
- Pandeiro
- Pandero
- Pandero jarocho
- Pandura
- Panduri