- Mason -- Mason Brothers
- Mason Brown -- Mason Cole & Family in Praise
- Mason Daring & Jeanie Stahl -- Mason Dixon Hobos
- Mason E. Runs Through, Jr. -- Mason Howell
- Mason Jar Ice Tea Drinkers -- Mason Lindahl
- Mason Masso -- Mason Proper
- Mason Rack Band -- Mason Rent
- Mason Roberts -- Mason Shepherd
- Mason Smith Band -- Mason Vs Princess
- Mason Vs. Princess Superstar -- Masonic
- Masonic Travelers of Memphis -- Mason's Project
- Masood Ali Khan -- Masp
- MASP Project -- Masque
- Masque -- Masqueraders
- Masquerage -- Mass 187
- M.A.S.S. -- Mass
- Mass -- Mass Assembly
- Mass Ave Project -- Mass Comm
- Mass Conception -- Mass Cypher
- Mass Cypher aka Marian Wielkopolski -- Mass Echo
- Mass Effect -- Mass Genocide