| Logo | Name | Abbrev. | Items | Last Update | Rating | Country | Description |
| | M & N WORLDWIDE | MNWORLDWIDE | 0 | 4Jan2002 | | USA | Classic LP's to the Finest People in the World - Our Customers! |
| | M AND K BOOKS | MANDKBOOKS | 11211 | 20Jul2008 | | USA | |
| | M APPLETON | MAGGZ | 0 | (unknown) | | UNITED KINGDOM | |
| | M B FORSTON | MBFORSTON | 6 | 24Oct2001 | Poor | USA | |
| | M JUNGE | MJUN | 0 | (unknown) | | USA | |
| | M K SOUNDS | MKS | 378 | 20Jul2008 | Excellent | UNITED KINGDOM | RECORD COLLECTORS FOR MORE THAN 35 YEARS! |
| | M KERSTEN | MKERSTEN | 0 | (unknown) | | NETHERLANDS | |
| | M LOUIS | MIZZ | 0 | (unknown) | | USA | |
| | M O N O - R E C O R D S | MONOREC | 6 | 23Feb2005 | | IRELAND | Dublins best collection of Trance,Techno,House & Classics |
| | M VOGT | MVOGT | 0 | (unknown) | | USA | |
| | M&B'S GARAGE | MBGARAGE | 26 | 10Jun2006 | | USA | Some of the best Rock'n'Roll, Doo Wop, R&B, and Garage Band Music |
| | M&G RECORDS | EUNEECE | 10698 | 7Jul2008 | Excellent | USA | |
| | M&K RECORDS | MKRECORDS | 2 | 6Feb2006 | | UNITED KINGDOM | CATSFIELD'S LARGEST VINYL STORE. |
| | M&K SOUND ENTERTAINMENT | MKSOUND | 31 | 29Jun2001 | | USA | We are the world's premiere audiophile label ith top quality CD, DVD, and direct |
| | M&M MUSIC | MMMUSIC | 0 | 31Mar2003 | | USA | M&M Music specializes in rare, hard to find and OOP latin pop. |
| | M&M RECORDS | DANCING | 63 | 16Feb2003 | Good | USA | We Are Totally Committed to Keeping Your Business. |
| | M,B,FORSTON | MEL | 6 | 25Oct2001 | | USA | |
| | M-DISC | MDISCS | 181195 | 17Jul2008 | OK | NETHERLANDS | Brand New Media and Books |
| | M-INSPIRED | MSPIRE | 0 | (unknown) | | USA | |
| | M-SWING RECORDS | MSWING | 4 | 2Aug2003 | | CANADA | |
| | M-TRIBE | MTRIBE | 0 | (unknown) | | USA | Moroccan Tribal Music |
| | M. BOON | BONESINC | 0 | (unknown) | | NETHERLANDS | |
| | M. BRADEN | BRADENRECORDS | 5 | 23Jun2003 | | USA | |
| | M. BURNEY | MBURNEY | 0 | (unknown) | | USA | |
| Logo | Name | Abbrev. | Items | Last Update | Rating | Country | Description |
| | MADONNA STUFFS | MAEGAN | 0 | (unknown) | | USA | Rare Madonna Stuff for those Rare Madonna Fans |
| | MADRECORDS | MADRECORDS | 156003 | 14Jul2008 | Excellent | SPAIN | large collection of any kind of vinyls, 70's, 80's, 90's. |
| | MADSSAR | JAVID | 0 | (unknown) | | PAKISTAN | |
| | MADSYD'S RECORDS INC. | MSRINC | 0 | (unknown) | | NETHERLANDS | Holland's biggest collector of the Floyd |
| | MAERYAIR RECORDS | MAERYAIR | 0 | (unknown) | | USA | |
| | MAESPRODUCTSINC | AAGJE35 | 0 | (unknown) | | BELGIUM | |
| | MAESTRI,LTD | MAESTRILTD | 0 | (unknown) | | USA | Specializing in Hard-to-Find House and Techno!!!!! |
| | MAETELA | MAETELA | 0 | (unknown) | | USA | |
| | MAETRIK MUSIC | MAETRIKMUSIC | 0 | (unknown) | | USA | |
| | MAFIADEGATO | MAFIADEGATO | 0 | (unknown) | | USA | |
| | MAG1USA | MAG1USA | 0 | (unknown) | | USA | |
| | MAGGI SHERWIN | MAGGICA | 0 | (unknown) | | USA | |
| | MAGGIE JEFFERS | MAGGIEJ | 0 | (unknown) | | USA | |
| | MAGGIE WHITFIELD | MAGS | 0 | 9Dec2002 | | USA | |
| | MAGGYMAY | MAGGYMAY | 0 | (unknown) | | USA | |
| | MAGIC BOOKS | MAGIC | 0 | (unknown) | | SOUTH AFRICA | |
| | MAGIC BUS | TMB | 0 | (unknown) | | IRELAND | |
| | MAGIC BUS MUSIC | MAGICBUSMUSIC | 952 | 16Jul2008 | Excellent | GERMANY | GERMANY's Best Mail Order since 1985 |
| | MAGIC LANTERN RECORDS | MAGICLANTERN | 1 | 24Jun2005 | | USA | |
| | MAGIC MARKS BOOKS | MAGICMARKS | 0 | (unknown) | | UNITED KINGDOM | |
| | MAGIC RECORDS | MAGREC | 2 | 6Feb2002 | | *FIJI ISLANDS | SECOND HAND DEALER |
| | MAGICAL SOUNDS | MAGICALSOUNDS | 0 | (unknown) | | FRANCE | World, Alternative & Trad music specialist |
| | MAGICBUS COLLECTABLES | MAGICBUS | 0 | (unknown) | | USA | Cd`s, Vinyl, Rarities, Imports, New & Used, 60`s, 70`s |
| | MAGICBUSRECORDS | MBUSREC | 0 | (unknown) | | ITALY | |
| | MAGICK BY DESIGN - MUSIC DIVISION | MBDMUSDIV | 0 | 22Jun2003 | | USA | |