- Jack Mack & The Heart Attack -- Jack Maisel
- Jack Malaise -- Jack Manno
- Jack Maravell -- Jack Marshall's Music
- Jack Martin -- Jack Masters
- Jack Mate -- Jack Mayhew
- Jack McCauley -- Jack McMahon
- Jack McManus -- Jack Meakin
- Jack Mearns -- Jack Miles
- Jack Miller -- Jack Millman & His Hollywood Allstars
- Jack Millman's All Star Jazz Orchestra -- Jack Mitchell
- Jack Mitchell And His Big Band -- Jack Montgomery
- Jack Montrose -- Jack Moy & Glöden
- Jack Moyles -- Jack N. House
- Jack N Lefty -- Jack Neal & The Jumpin' Jack
- Jack Neilson -- Jack Nicholson
- Jack Nimitz Quartet -- Jack Norton & The Mullet River Boys
- Jack Norworth -- Jack O' Fire
- Jack O' Nuts -- Jack Oblivian
- jack o'brien -- Jack O'Neill
- Jack Only -- Jack & Outlaws
- Jack Overbay -- Jack Palmer
- Jack Palmer -- Jack Pantazis
- Jack Parker -- Jack Pati
- Jack Patron -- Jack Pearson
- Jack Pearson -- Jack Pepper
- Jack Pereira -- Jack Phillips