| Name | Sex | Colour | Registration | Foaling Date | Reg Status | Competition Status |
|---|---|---|---|---|---|---|
| MISS BALL | Mare | BAY | 17595 | 01/01/1967 | Stud Book | Deceased |
| MISS BALAMARAS - HSH | Mare | GREY | 34292 | 01/08/1972 | Stud Book | Deceased |
| MISS BALAMARA | Mare | GREY | 19813 | 07/09/1972 | Stud Book | Not Eligible |
| MISS BACARDI | Mare | BROWN | 61367 | 24/11/1976 | Stud Book | Deceased |
| MISS BABYLON II | Mare | BAY | 104600 | 16/11/1984 | Stud Book | Not Eligible |
| MISS BABYLON | Mare | CHESTNUT | 49819 | 01/09/1976 | Stud Book | Not Eligible |
| MISS B HAVEN | Mare | CHESTNUT | C1-140392 | 13/08/1995 | First Cross | Not Eligible |
| MISS AUSSIE | Mare | BAY | 46650 | 04/08/1975 | Stud Book | Deceased |
| MISS ATHENA | Mare | CHESTNUT | 57240 | Stud Book | Not Eligible | |
| MISS ASPEN OAK | Mare | CHESTNUT | 159218 | 05/10/2001 | Stud Book | Eligible |
| MISS ASH | Mare | BROWN | 2193 | Stud Book | Deceased | |
| MISS ARTHUR | Mare | BAY | 12349 | Stud Book | Deceased | |
| MISS ARNA | Mare | CHESTNUT | C1-268231 | 20/09/2022 | First Cross | Eligible |
| MISS ARMSTRONG | Mare | CHESTNUT | 38785 | Stud Book | Not Eligible | |
| MISS ARLINGTON | Mare | PALOMINO | F30267 | 19/09/1981 | Foal Recorded | Not Eligible |
| MISS ARIZONA | Mare | CHESTNUT | 35036 | Stud Book | Deceased | |
| MISS ARGYLE | Mare | BAY | C1-151654 | 01/09/1993 | First Cross | Deceased |
| MISS ARENA | Mare | DUN | 60070 | 01/01/1975 | Stud Book | Not Eligible |
| MISS ARCHILLES | Mare | CHESTNUT | 2107 | Stud Book | Deceased | |
| MISS ARCHER | Mare | BAY | 9296 | Stud Book | Deceased | |
| MISS APRIL | Mare | BAY | 72325 | 12/04/1981 | Stud Book | Not Eligible |
| MISS APRICOT | Mare | BAY | 59502 | Stud Book | Not Eligible | |
| MISS APOLLO | Mare | GREY | 26072 | 01/08/1956 | Stud Book | Deceased |
| MISS ANTIQUE | Mare | BAY | 5542 | Stud Book | Deceased | |
| MISS ANOUSHKA - HSH | Mare | BROWN | 45010 | 29/10/1974 | Stud Book | Deceased |
| MISS ANNIE | Mare | CHESTNUT | 31353 | Stud Book | Not Eligible | |
| MISS ANNA CONDA | Mare | CHESTNUT | SM-132575 | 11/11/1986 | Special Merit - Stud Book | Not Eligible |
| MISS ANJO | Mare | BAY | 53048 | 15/08/1974 | Stud Book | Not Eligible |
| MISS ANGLEDOOL | Mare | BAY | 27006 | 21/02/1967 | Stud Book | Deceased |
| MISS ANGIE | Mare | BAY | 57738 | Stud Book | Not Eligible | |
| MISS ANGELIQUE | Mare | BAY | 6011 | 01/01/1969 | Stud Book | Deceased |
| MISS AMY | Mare | BAY | 48624 | 10/12/1970 | Stud Book | Deceased |
| MISS AMONDE | Mare | BAY | 114028 | 22/11/1989 | Stud Book | Deceased |
| MISS AMIGO | Mare | CHESTNUT | F29228 | 07/09/1980 | Foal Recorded | Not Eligible |
| MISS AMERICA | Mare | BLACK | C1-234305 | 28/11/2009 | First Cross | Deceased |
| MISS AMELIA | Mare | BAY | 52259 | 31/10/1975 | Stud Book | Not Eligible |
| MISS AMBITIOUS | Mare | BAY | C2-262873 | 10/12/2021 | Second Cross | Eligible |
| MISS AMBER MOLE | Mare | CHESTNUT | F18896 | 19/10/1978 | Foal Recorded | Not Eligible |
| MISS AMBER | Mare | BAY | 30367 | 01/01/1969 | Stud Book | Deceased |
| MISS AMANDA | Mare | GREY | 46116 | 10/10/1974 | Stud Book | Not Eligible |
| MISS ALPINE | Mare | BAY | 101695 | 27/09/1984 | Stud Book | Not Eligible |
| MISS ALLY TYSON | Mare | CHESTNUT | C1-171573 | 11/08/2000 | First Cross | Not Eligible |
| MISS ALISON | Mare | BROWN | 23353 | 28/12/1973 | Stud Book | Deceased |
| MISS ALIMONY | Mare | BROWN | C1-190578 | 21/11/1992 | First Cross | Eligible |
| MISS ALBERTINA - HSH | Mare | BROWN/BLACK | 130864 | 03/11/1995 | Stud Book | Eligible |
| MISS ACTION | Mare | BAY | F22842 | 10/12/1978 | Foal Recorded | Deceased |
| MISS ACRES JEWEL | Mare | BROWN/BLACK | 267366 | 27/12/2022 | Stud Book | Eligible |
| MISS ACRES | Mare | BAY | C1-244739 | 25/09/2013 | First Cross | Eligible |
| MISS ACHERNAR | Mare | BLACK | B2-190677 | 23/09/1994 | Breeding Purposes Only - Second Cross | Not Eligible |
| MISS ABRACADABRA | Mare | BAY/BLACK | 148449 | 03/06/1993 | Stud Book | Not Eligible |
| MISS ABOU | Mare | BAY | F43519 | 03/10/1987 | Foal Recorded | Not Eligible |
| MISS ABBY - HSH | Mare | CHESTNUT | 1486 | 01/09/1969 | Stud Book | Deceased |
| MISS ABBIGAIL | Mare | BAY | 7673 | Stud Book | Deceased | |
| MISS ABBEYS BOY | Gelding | CHESTNUT | 72201 | 01/01/1980 | Stud Book | Not Eligible |
| MISS ABBEY STAR | Mare | BROWN | 56589 | 01/10/1975 | Stud Book | Not Eligible |
| MISS ABBEY DOLL | Mare | BROWN | C1-149896 | 25/10/1998 | First Cross | Not Eligible |
| MISS 007 | Mare | BROWN | 17592 | 01/01/1967 | Stud Book | Deceased |
| MISPA | Mare | GREY | 26689 | Stud Book | Not Eligible | |
| MISLING - HSH | Mare | BLACK/GREY | 127902 | 04/09/1995 | Stud Book | Eligible |
| MISLETOE MISS | Mare | CHESTNUT | 64382 | 01/08/1979 | Stud Book | Not Eligible |
| MISKUNN MUPPET - HSH | Mare | BAY | 262176 | 22/08/2012 | Stud Book | Not Eligible |
| MISKUNN JACKIE - HSH | Mare | BUCKSKIN | 262177 | 20/08/2022 | Stud Book | Not Eligible |
| MISKUNN GINGER | Mare | CHESTNUT | 251764 | 11/09/2017 | Stud Book | Not Eligible |
| MISKUNN ASHURA | Gelding | BUCKSKIN | R-260609 | 01/03/2022 | Base Registry | Not Eligible |
| MISHKARA - HSH | Mare | CHESTNUT/BROWN | 266391 | 28/10/2023 | Stud Book | Eligible |
| MISHKA | Mare | BAY | 27357 | Stud Book | Not Eligible | |
| MISHIE | Mare | GREY | 33320 | 10/10/1970 | Stud Book | Deceased |
| MISHERIE | Mare | BROWN | 58333 | 24/10/1978 | Stud Book | Not Eligible |
| MISHAP | Gelding | BAY | 27998 | Stud Book | Not Eligible | |
| MISHAM | Mare | CHESTNUT | 32068 | 26/01/1972 | Stud Book | Deceased |
| MISHA LADY | Mare | BAY | 57910 | 28/09/1977 | Stud Book | Not Eligible |
| MISHA | Mare | BAY | F43319 | 13/09/1987 | Foal Recorded | Not Eligible |
| MISFORTUNE | Mare | CHESTNUT | 35502 | 01/08/1967 | Stud Book | Deceased |
| MISFIT | Mare | PSEUDO/ALBINO | F36406 | 26/09/1983 | Foal Recorded | Deceased |
| MISFIRE | Mare | BLACK/GREY | 122942 | 19/11/1993 | Stud Book | Not Eligible |
| MISDINI | Mare | GREY | 22940 | 01/01/1974 | Stud Book | Deceased |
| MISDEMEANOUR - HSH | Mare | GREY | 20949 | 29/10/1972 | Stud Book | Deceased |
| MISCONSTURE | Mare | BROWN | 9179 | 29/04/1970 | Stud Book | Deceased |
| MISCO - HSH | Mare | BROWN/ROAN | 100546 | 18/01/1986 | Stud Book | Eligible |
| MISCKA | Mare | BAY | F20524 | 05/01/1980 | Foal Recorded | Not Eligible |
| MISCINA | Mare | CHESTNUT | 35277 | 01/08/1966 | Stud Book | Deceased |
| MISCHORD | Stallion | BROWN | 24306 | Stud Book | Deceased | |
| MISCHKA | Mare | BAY | 111985 | 01/10/1988 | Stud Book | Not Eligible |
| MISCHIEVOUS TEE | Gelding | BAY | C1-256453 | 01/09/2014 | First Cross | Not Eligible |
| MISCHIEVEOUS MADDY - HSH | Mare | BAY | 266694 | 27/10/2019 | Stud Book | Eligible |
| MISCHIEVEOUS | Gelding | CHESTNUT | 235307 | 20/08/2011 | Stud Book | Not Eligible |
| MISCHIEF SPIN N JILL | Mare | CHESTNUT | C1-161335 | 29/10/1996 | First Cross | Eligible |
| MISCHIEF MISTY OAK | Mare | BROWN | 132141 | 22/10/1997 | Stud Book | Eligible |
| MISCHIEF MAYBE | Mare | BAY | 80930 | 15/09/1990 | Stud Book | Not Eligible |
| MISCHIEF MAKER | Mare | CHESTNUT | F11441 | 22/11/1977 | Foal Recorded | Deceased |
| MISCHIEF LADY | Mare | CHESTNUT | 36847 | 15/08/1973 | Stud Book | Not Eligible |
| MISCHIEF BLACK LACE | Mare | BLACK | 267639 | 12/09/2017 | Stud Book | Eligible |
| MISCHIEF ARTIST | Mare | CHESTNUT | C1-251856 | 22/10/2017 | First Cross | Not Eligible |
| MISCHIEF | Mare | GREY | 10281 | 11/10/1966 | Stud Book | Deceased |
| MISCHEVIOUS MAID | Mare | BAY | 7547 | Stud Book | Deceased | |
| MISCELLANEOUS - HSH | Stallion | BAY/ROAN | 102173 | 06/09/1985 | Stud Book | Deceased |
| MISCAMBLE | Mare | BAY | 32310 | Stud Book | Not Eligible | |
| MISARRA ROYAL PEACH | Mare | BAY | 66377 | 07/02/1980 | Stud Book | Not Eligible |
| MISALBLONNEUX | Mare | BROWN | 59055 | 17/10/1975 | Stud Book | Deceased |
| MISAL SUNSHINE | Mare | CHESTNUT | F30480 | 16/10/1981 | Foal Recorded | Not Eligible |