- Robert McDuffy -- Robert Mckewen
- Robert McPherson -- Robert Melosh
- Robert Mendez -- Robert Mersey
- Robert Mersey & His Orchestra -- Robert Michael Fantini
- Robert Michaels -- Robert Miles feat. Maria Nayler
- Robert Milla -- Robert Miranda
- Robert Miras -- Robert Mlkeyan
- Robert Moe -- Robert Montgomerie
- Robert Montgomery -- Robert Morales
- Robert Moran -- Robert Morris
- Robert Morse -- Robert Muczynski
- Robert Mugalian -- Robert N. Taylor
- Robert Nagel -- Robert Nasveld
- Robert Nathaniel Dett -- Robert Nelson
- Robert Newcomb -- Robert Nickson
- Robert Nighthawk -- Robert Nishida
- Robert Nix -- Robert Normann
- Robert Normann Trio -- Robert O' Connor
- Robert O'Connor -- Robert Opratko
- Robert Orr Trio -- Robert Owens
- Robert Owens -- Robert Padron
- Robert Page -- Robert-Pappert-Chor
- Robert Paquette -- Robert Parker
- Robert Parker -- Robert Passera
- Robert Pastorelli -- Robert Payer