| Name | Sex | Colour | Registration | Foaling Date | Reg Status | Competition Status |
|---|---|---|---|---|---|---|
| ZHAV OF LEAWOOD - HSH | Gelding | PALOMINO | 46279 | 11/10/1971 | Stud Book | Deceased |
| ZHIVAGO | Gelding | BROWN/BLACK | 72247 | 15/09/1976 | Stud Book | Not Eligible |
| ZHIVAGOS HOSTESS - HSH | Mare | BAY | 65864 | 01/04/1978 | Stud Book | Not Eligible |
| ZIEGFELD FOLLIE | Mare | BAY/BROWN | C1-157859 | 27/11/1992 | First Cross | Not Eligible |
| ZIG ZAG | Mare | BAY | 8985 | Stud Book | Deceased | |
| ZIG ZAG OAK | Gelding | CHESTNUT | C2-189923 | 02/09/1997 | Second Cross | Not Eligible |
| ZIGGY | Mare | BROWN | C1-149030 | 14/11/1994 | First Cross | Not Eligible |
| ZIGGY DANCER | Gelding | BAY/BLACK | C1-138873 | 23/09/1995 | First Cross | Not Eligible |
| ZIGGY STARDUST | Mare | GREY | 58407 | 04/08/1976 | Stud Book | Not Eligible |
| ZILCAS BRAVO | Gelding | BAY | C1-241184 | 13/12/2015 | First Cross | Deceased |
| ZILCAS CHIEF | Gelding | CHESTNUT | 244015 | 01/11/2016 | Stud Book | Not Eligible |
| ZILCAS INDIANA | Mare | BAY | C1-237958 | 15/11/2014 | First Cross | Eligible |
| ZILCAS LENNY - HSH | Gelding | CHESTNUT | 244016 | 12/12/2016 | Stud Book | Not Eligible |
| ZILCAS MARGO | Mare | BAY | C2-248039 | 08/10/2017 | Second Cross | Not Eligible |
| ZILCAS PROC | Gelding | BAY | C1-248010 | 03/10/2017 | First Cross | Not Eligible |
| ZILCAS REBA - HSH | Mare | BAY | C1-241185 | 02/10/2013 | First Cross | Not Eligible |
| ZILZIE BLUE RAPSODY | Mare | GREY | F10214 | 01/10/1977 | Foal Recorded | Deceased |
| ZILZIE COONADOO | Mare | CHESTNUT | 14167 | 27/10/1965 | Stud Book | Deceased |
| ZILZIE PETITE | Mare | CHESTNUT | F10215 | 13/09/1977 | Foal Recorded | Deceased |
| ZIMBA | Gelding | BAY | 19173 | Stud Book | Deceased | |
| ZIMOT MISS N OAK | Mare | BAY | 260783 | 12/09/2010 | Stud Book | Eligible |
| ZIMOT ZELMAS DESTINY | Mare | CHESTNUT | 266095 | 07/12/2020 | Stud Book | Eligible |
| ZIND DILEE FLAMING STAR | Mare | CHESTNUT | 52235 | Stud Book | Not Eligible | |
| ZIND DILEE PLUTO | Gelding | BROWN/PIED | 54273 | Stud Book | Not Eligible | |
| ZIND DILEE STRETCH | Gelding | CHESTNUT | 54274 | Stud Book | Not Eligible | |
| ZING | Mare | CHESTNUT | C1-230239 | 02/09/2011 | First Cross | Eligible |
| ZINZI | Mare | BAY | 77576 | 15/11/1985 | Stud Book | Not Eligible |
| ZIP ALONG | Mare | BROWN | 52246 | 01/11/1973 | Stud Book | Eligible |
| ZIP DOC STRAW | Mare | CHESTNUT | 163017 | 07/09/2001 | Stud Book | Deceased |
| ZIP TIE | Gelding | BAY | 252210 | 18/09/2016 | Stud Book | Eligible |
| ZIPADEEDOODAH | Gelding | CHESTNUT | C1-241788 | 16/10/2013 | First Cross | Not Eligible |
| ZIPFS BAY LADY | Mare | BAY | 29088 | Stud Book | Not Eligible | |
| ZIPP | Mare | BROWN | 10154 | Stud Book | Deceased | |
| ZIPPADOO | Mare | CHESTNUT | 76305 | 01/01/1982 | Stud Book | Not Eligible |
| ZIPPER | Mare | BAY | 40237 | 10/12/1974 | Stud Book | Not Eligible |
| ZIPPER GIRL | Mare | BAY | 34488 | 22/09/1972 | Stud Book | Deceased |
| ZIPPER LEE - HSH | Mare | BROWN | 131313 | 20/12/1995 | Stud Book | Not Eligible |
| ZIPPY | Mare | BLACK | 213743 | 05/10/1982 | Stud Book | Deceased |
| ZIPS DOUBLE DOC | Mare | CHESTNUT | C1-231268 | 29/10/2004 | First Cross | Not Eligible |
| ZIRCON SHOOTING STAR | Stallion | BROWN/PIED | F43816 | 17/08/1987 | Foal Recorded | Not Eligible |
| ZIRLINA | Mare | CHESTNUT | 77762 | 22/10/1986 | Stud Book | Not Eligible |
| ZITA | Mare | BAY | 29585 | 01/01/1970 | Stud Book | Deceased |
| ZITA LASS | Mare | BAY | 58442 | Stud Book | Not Eligible | |
| ZOBRA MISS | Mare | BAY | 9851 | 01/09/1968 | Stud Book | Deceased |
| ZOCMAR ELEGANT EDITION - HSH | Mare | BROWN/BLACK | 149917 | 10/09/1999 | Stud Book | Not Eligible |
| ZOCMAR GLAMOUR GIRL - HSH | Mare | BROWN | 140670 | 04/11/1997 | Stud Book | Not Eligible |
| ZOCMAR PLAYBOY | Gelding | BAY/BROWN | 132082 | 29/12/1995 | Stud Book | Not Eligible |
| ZODIAC | Stallion | PALOMINO | F9843 | 01/01/1978 | Foal Recorded | Not Eligible |
| ZODIAC DREAMER | Mare | BAY | 70366 | 01/08/1977 | Stud Book | Not Eligible |
| ZODIAC MAC | Stallion | CHESTNUT | 160502 | 02/11/2001 | Stud Book | Deceased |
| ZOE | Gelding | CHESTNUT | 20171 | 03/09/1968 | Stud Book | Deceased |
| ZOE PLAUDIT | Mare | BROWN | 74860 | 01/01/1980 | Stud Book | Not Eligible |
| ZOES WONDER - HSH | Mare | BAY/BROWN | 135338 | 15/10/1998 | Stud Book | Not Eligible |
| ZOEY | Mare | BAY | 14980 | Stud Book | Deceased | |
| ZOEY MISCHIEF | Mare | CHESTNUT | 43146 | 09/10/1974 | Stud Book | Not Eligible |
| ZOLA | Mare | CHESTNUT | 53238 | Stud Book | Not Eligible | |
| ZOLA BUDD | Mare | GREY | 74563 | 06/08/1983 | Stud Book | Not Eligible |
| ZOLOTA | Mare | CHESTNUT | 76148 | 01/12/1978 | Stud Book | Not Eligible |
| ZOLTON STARLYTE | Mare | PALOMINO | 42662 | 20/11/1975 | Stud Book | Deceased |
| ZONA - HSH | Mare | CHESTNUT | 743 | 01/08/1958 | Stud Book | Deceased |
| ZONK | Gelding | BROWN/BLACK | 68826 | 04/04/1976 | Stud Book | Not Eligible |
| ZONTAN | Mare | GREY | F16504 | 30/09/1978 | Foal Recorded | Not Eligible |
| ZOOM CRYSTAL | Mare | BROWN/BLACK | B2-242437 | 18/08/2001 | Breeding Purposes Only - Second Cross | Deceased |
| ZOOM PLUME | Mare | BROWN | 28826 | 27/10/1973 | Stud Book | Not Eligible |
| ZOOT | Gelding | CHESTNUT | 55430 | Stud Book | Deceased | |
| ZORBA MISS | Mare | BAY | 24147 | 15/11/1967 | Stud Book | Deceased |
| ZORITTA | Mare | CHESTNUT | 70528 | 29/09/1979 | Stud Book | Not Eligible |
| ZORO | Stallion | BROWN/BLACK | F8337 | 08/10/1976 | Foal Recorded | Not Eligible |
| ZORRACK | Gelding | CHESTNUT | 42062 | 01/01/1975 | Stud Book | Not Eligible |
| ZORROLEA - HSH | Mare | GREY | 173241 | 18/11/1996 | Stud Book | Eligible |
| ZORROS COLETTE | Mare | BAY | C2-241392 | 29/10/2004 | Second Cross | Not Eligible |
| ZORROS JULIET | Mare | BROWN | C2-168350 | 10/02/2002 | Second Cross | Not Eligible |
| ZOSTEROPS | Mare | BROWN | 7263 | Stud Book | Deceased | |
| ZOT | Stallion | CHESTNUT | 2255 | 01/01/1968 | Stud Book | Deceased |
| ZOWIE | Mare | DUN | 76131 | 01/11/1978 | Stud Book | Not Eligible |
| ZOY | Mare | CHESTNUT | 5139 | Stud Book | Deceased | |
| ZOZINAS PRINCESS | Mare | BROWN | 38550 | 12/11/1975 | Stud Book | Not Eligible |
| ZSAROS ROYAL OPAL | Gelding | BROWN | C1-236579 | 09/12/2013 | First Cross | Not Eligible |
| ZUBBEDIYA | Mare | GREY | 9673 | 10/11/1971 | Stud Book | Deceased |
| ZUES | Gelding | BAY | 70496 | 01/01/1978 | Stud Book | Not Eligible |
| ZUFIRA | Mare | CHESTNUT | B2-236194 | 02/11/2008 | Breeding Purposes Only - Second Cross | Not Eligible |
| ZULA | Mare | BAY | 35213 | 01/01/1970 | Stud Book | Deceased |
| ZULIEKA III - HSH | Mare | GREY | 42357 | Stud Book | Not Eligible | |
| ZULO | Mare | GREY | 51315 | 10/03/1973 | Stud Book | Not Eligible |
| ZULU | Mare | BROWN/BLACK | C1-185036 | 02/02/2000 | First Cross | Eligible |
| ZULU MOON | Mare | BLACK | 81203 | 01/08/1989 | Stud Book | Not Eligible |
| ZUNI GLENHAVEN LADY | Mare | BLACK/GREY | 50472 | Stud Book | Not Eligible | |
| ZUZIE CARESS | Mare | BROWN | 14165 | 10/10/1966 | Stud Book | Deceased |
| ZWASM SHARNE | Mare | BROWN | 69858 | 08/11/1982 | Stud Book | Deceased |
| ZWASUM ANNABELLE | Mare | CHESTNUT | 52441 | 29/11/1978 | Stud Book | Not Eligible |
| ZWASUM RIVOLI BLACKJACK - HSH | Stallion | BLACK | 71850 | 04/11/1982 | Stud Book | Deceased |
| ZWASUM VALLEY MONARCH | Gelding | BAY | 61609 | 20/11/1974 | Stud Book | Not Eligible |