M-1
Mad Driver (Italy)
Madcity
Manifesto (Los Angeles, California)
MCA (Universal City, California )
Merge
Mesa/BlueMoon
Middle Class Pig (Tübingen, Germany)
Midnight (New York, New York)
Midwest Messiah (Iowa)
Mimicry (Eureka, California)
Mint (Vancouver, British Columbia, Canada)
Munster (Madrid, Spain)
Music Club (Tucson, Arizona)
MuSick Recordings (Redondo Beach, California)