| | ANOCOVA | | mean analysis-of-covariance |
| | drmfsltd | | musical scale |
| | EDOC | | Meeting of the Other Film |
| | I.M.Y.S.V.M.I | | miss you so very much |
| | imae | | Monthly Index of the Economic Activity |
| | M&A | | mergers and acquisitions |
| | M&A | | Mergers and Aquisitions |
| | m&ie | | meals and incidental expenses |
| | M.C. | | Master of Ceremonies |
| | m.f.c.f. | | My Friends Come First |
| | M.I.A. | | missing in action |
| | M.I.P. | | Minor in Possession |
| | M.K.I.A | | Mr know it all |
| | m.k.i.a. | | mr know it all |
| | M.L.A.A.F | | Military land and air force's |
| | M.L.I.A. | | My Life Is Average |
| | M.L.O.A. | | medical leave of absence |
| | M.M.I.L.O.M.S. | | my mum's looking over my shoulder |
| | m.M.n. | | meiner Meinung nach |
| | M.M.S. | | Multimedia Messaging Service |
| | M.O. | | Modus Operadi |
| | m.o.d. | | message of the day |
| | m.o.d. | | ministry of defence |
| | m.o.e. | | ministry of education |
| | M.O.G. | | Multiplayer Online Game |
| | m.u.s.v.m. | | miss you so very much |
| | m.v.p. | | Most valuable person |
| | m.v.p. | | Most Valuable Player |
| | m.v.p. | | Most Valuable Professional |
| | M.W.T.B. | | mess with the best |
|