- Walter Midgley
- Walter Milani
- Walter Miller
- Walter Mitchell
- Walter Mitty & The Realists
- Walter Mller
- Walter Moers
- Walter Moers & Thomas Pigor
- Walter Molder
- Walter Moller
- Walter Monachesi
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- Walter Moskowitz
- Walter Mouton
- Walter Murphy
- Walter Murphy
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- Walter Murphy & The Big Apple Band
- Walter N. Afanasieff
- Walter Nabiker
- Walter Nelson
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- Walter Nita
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- Walter Oberbrandacher
- Walter O'Keefe
- Walter Olmos
- Walter One
- Walter Ostanek
- Walter Ostanek & Frankie Yankovic