| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| MKR | MERKUR[3733] | TR.AE | W | DEU |
| MEX120 | MEXICO-120[3733] | TR.AE | S | MEX |
| ML | MILAM[3733] | TR.AE | I | USA:TX |
| MLB,2 | MILBURN[3733] | TR.AE | W | |
| MSS,2 | MILDRESS[3733] | TR.AE | W | NLD |
| MD,4 | MINDUM | TR.DR | S | USA:MN |
| MNP,2 | MINPRO[3733] | TR.AE | S | USA |
| MNR | MINOR[3733] | TR.AE | S | AUS |
| MLE,2 | MISKLE[3733] | TR.AE | S | AUS |
| M951 | MOISSON-951[3733] | TR.AE | W | FRA |
| MEY | MOREY[3733] | TR.AE | W | USA:GA |
| MST,3 | MUSTANG[3733] | TR.AE | W | USA |
| NABA | NABAWA[3733] | TR.AE | S | AUS |
| NAD63 | NADADORES-M-63[3733] | TR.AE | S | MEX |
| NAR60 | NAINARI-60[3733] | TR.AE | S | MEX |
| NAPA | NAPAYA[3733] | TR.AE | S | CAN |
| NRO74 | NARRO-74[3733] | TR.AE | S | MEX |
| NEE | NEELEY[3733] | TR.AE | W | USA:ID |
| NEKO | NEKOTA[3733] | TR.AE | W | USA:NE |
| NEL | NELSON[3733] | TR.AE | W | USA:ARK |