| Name | Sex | Colour | Registration | Foaling Date | Reg Status | Competition Status |
|---|---|---|---|---|---|---|
| HAYDON ORBIT | Mare | BROWN | 53116 | 30/10/1978 | Stud Book | Not Eligible |
| HAYDON ORBITAL - HSH | Stallion | BROWN | 188627 | 06/11/2008 | Stud Book | Eligible |
| HAYDON ORNAMENT - HSH | Mare | BAY | 240642 | 12/09/2015 | Stud Book | Eligible |
| HAYDON ORYX - HSH | Stallion | BAY | 123054 | 07/09/1992 | Stud Book | Not Eligible |
| HAYDON PAGEANTRY - HSH | Gelding | BROWN | 123058 | 05/11/1992 | Stud Book | Not Eligible |
| HAYDON PALERMO - HSH | Stallion | BROWN | R-258903 | 22/12/2020 | Base Registry | Eligible |
| HAYDON PALOMA | Mare | CHESTNUT | C1-246792 | 12/09/2007 | First Cross | Eligible |
| HAYDON PANDORA - HSH | Mare | BAY | 188624 | 08/09/2008 | Stud Book | Eligible |
| HAYDON PARRA | Mare | BROWN | 11677 | 01/08/1963 | Stud Book | Deceased |
| HAYDON PARTING JEWEL - HSH | Gelding | BROWN | 100012 | 05/12/1985 | Stud Book | Not Eligible |
| HAYDON PASHMINA - HSH | Mare | BROWN | 177158 | 12/11/2004 | Stud Book | Eligible |
| HAYDON PATTY BLUE - HSH | Mare | BROWN | 53105 | 20/09/1976 | Stud Book | Not Eligible |
| HAYDON PATTY BROWN - HSH | Mare | BROWN | 884 | 01/08/1954 | Stud Book | Deceased |
| HAYDON PEARL - HSH | Mare | BROWN | 59510 | 28/09/1979 | Stud Book | Not Eligible |
| HAYDON PEARL ASH - HSH | Mare | CHESTNUT | 212492 | 29/09/1981 | Stud Book | Eligible |
| HAYDON PENDANT - HSH | Mare | BROWN | 52007 | 07/09/1976 | Stud Book | Not Eligible |
| HAYDON PENELOPE - HSH | Mare | BROWN | 139504 | 12/10/1997 | Stud Book | Not Eligible |
| HAYDON PENNY GIFT - HSH | Mare | BAY | 139505 | 09/10/1997 | Stud Book | Deceased |
| HAYDON PENNY JEWEL - HSH | Mare | BROWN | 139509 | 10/11/1997 | Stud Book | Eligible |
| HAYDON PEONY ROSE - HSH | Mare | CHESTNUT | 139507 | 16/10/1997 | Stud Book | Eligible |
| HAYDON PERDITA - HSH | Mare | BROWN | 193729 | 30/10/2002 | Stud Book | Eligible |
| HAYDON PERON | Gelding | BROWN | C2-246803 | 22/10/2013 | Second Cross | Not Eligible |
| HAYDON PESO - HSH | Unknown | BAY | F171363 | 29/09/2003 | Foal Recorded | Not Eligible |
| HAYDON PICTORIAL - HSH | Gelding | BROWN/BLACK | F137020 | 04/09/1996 | Foal Recorded | Deceased |
| HAYDON PIROUETTE - FM HSH | Mare | BLACK | 6438 | 01/08/1962 | Stud Book | Deceased |
| HAYDON PLOVER - HSH | Mare | BAY | 229704 | 30/09/2012 | Stud Book | Eligible |
| HAYDON PLUME | Mare | BROWN | C1-246804 | 25/08/2016 | First Cross | Eligible |
| HAYDON POLKA - HSH | Mare | GREY | C1-258906 | 01/10/2018 | First Cross | Not Eligible |
| HAYDON POSY - HSH | Mare | BROWN | 146458 | 07/12/1998 | Stud Book | Not Eligible |
| HAYDON PRECIOUS JEWEL - HSH | Mare | BAY | 177162 | 02/08/2004 | Stud Book | Eligible |
| HAYDON PRETTY WOMAN - HSH | Mare | CHESTNUT | 132973 | 15/11/1995 | Stud Book | Not Eligible |
| HAYDON PROSPECTOR - HSH | Gelding | BAY | 129665 | 07/12/1994 | Stud Book | Not Eligible |
| HAYDON PUDDLES - HSH | Stallion | BROWN | F162300 | 01/11/2001 | Foal Recorded | Not Eligible |
| HAYDON QUARTZ - HSH | Mare | BAY | 103793 | 15/08/1982 | Stud Book | Deceased |
| HAYDON QUEBEC - HSH | Stallion | BROWN | F171365 | 23/09/2003 | Foal Recorded | Not Eligible |
| HAYDON QUEEN JEWEL - HSH | Mare | CHESTNUT | 177161 | 03/08/2004 | Stud Book | Eligible |
| HAYDON QUEST - HSH | Gelding | BAY | 177146 | 02/08/2004 | Stud Book | Eligible |
| HAYDON QUESTION - HSH | Gelding | BROWN | 233240 | 02/11/2013 | Stud Book | Eligible |
| HAYDON QUIZ - HSH | Stallion | CHESTNUT | F162303 | 28/01/2002 | Foal Recorded | Deceased |
| HAYDON QUIZZ - HSH | Gelding | BAY | 177144 | 08/09/2004 | Stud Book | Not Eligible |
| HAYDON RACHEL - HSH | Mare | CHESTNUT | 115412 | 06/08/1988 | Stud Book | Deceased |
| HAYDON RADENE - HSH | Mare | BROWN | 53114 | 15/09/1978 | Stud Book | Not Eligible |
| HAYDON RADGLOW - HSH | Gelding | BROWN | 123056 | 20/09/1992 | Stud Book | Deceased |
| HAYDON RADIAL - HSH | Mare | BROWN | 34700 | 01/10/1975 | Stud Book | Deceased |
| HAYDON RADIANCE - HSH | Mare | CHESTNUT | F145761 | 13/10/1998 | Foal Recorded | Not Eligible |
| HAYDON RAIN SHADOW - HSH | Mare | CHESTNUT | 184695 | 24/10/2006 | Stud Book | Eligible |
| HAYDON RAINDROP - HSH | Mare | BAY | 186259 | 12/10/2007 | Stud Book | Eligible |
| HAYDON RAINGUN - HSH | Unknown | CHESTNUT | F115434 | 17/09/1989 | Foal Recorded | Not Eligible |
| HAYDON RAINSTORM - HSH | Mare | BAY | 129660 | 22/02/1995 | Stud Book | Deceased |
| HAYDON RAMONA - HSH | Mare | BROWN | 53106 | 25/08/1976 | Stud Book | Not Eligible |
| HAYDON RAYDEE - HSH | Stallion | BAY | F36931 | 26/11/1983 | Foal Recorded | Not Eligible |
| HAYDON RAYGUN - HSH | Stallion | BLACK | 115432 | 09/08/1989 | Stud Book | Deceased |
| HAYDON RAYLINA - HSH | Mare | BROWN | 66926 | 03/11/1981 | Stud Book | Deceased |
| HAYDON READY FOR LIFE | Mare | CHESTNUT | B2-231867 | 01/09/2002 | Breeding Purposes Only - Second Cross | Not Eligible |
| HAYDON REBECCA - HSH | Mare | BROWN | 142373 | 18/10/1997 | Stud Book | Deceased |
| HAYDON REDI RAY | Gelding | BROWN | 11681 | 01/08/1960 | Stud Book | Deceased |
| HAYDON REDRAW - HSH | Stallion | BROWN | 144304 | 23/10/1998 | Stud Book | Deceased |
| HAYDON REGINA - HSH | Mare | BLACK | 177157 | 15/10/2004 | Stud Book | Eligible |
| HAYDON RELIC - HSH | Gelding | BROWN | 118738 | 10/09/1990 | Stud Book | Not Eligible |
| HAYDON REO - HSH | Gelding | BAY | F236786 | 14/11/2014 | Foal Recorded | Not Eligible |
| HAYDON RESPONSE - HSH | Stallion | BROWN | F33721 | 31/08/1982 | Foal Recorded | Not Eligible |
| HAYDON REWINGA | Gelding | BROWN | 11680 | 01/01/1969 | Stud Book | Deceased |
| HAYDON REX - HSH | Gelding | BROWN | 220490 | 19/10/1987 | Stud Book | Deceased |
| HAYDON RHAPSODY - HSH | Mare | BROWN | C1-264206 | 06/09/2022 | First Cross | Eligible |
| HAYDON RICO - HSH | Stallion | BAY | 191262 | 14/11/2009 | Stud Book | Not Eligible |
| HAYDON RIFLEMAN - HSH | Gelding | BROWN | 115431 | 05/08/1989 | Stud Book | Deceased |
| HAYDON RINGLET - HSH | Mare | CHESTNUT | 53102 | 02/09/1976 | Stud Book | Deceased |
| HAYDON ROBIN - HSH | Mare | BROWN | 240643 | 17/09/2015 | Stud Book | Not Eligible |
| HAYDON ROBINA - HSH | Mare | BROWN | 158060 | 21/08/2000 | Stud Book | Not Eligible |
| HAYDON ROMANY - HSH | Mare | BROWN | 100020 | 17/11/1986 | Stud Book | Deceased |
| HAYDON ROSA - HSH | Mare | CHESTNUT | 142376 | 28/11/1997 | Stud Book | Deceased |
| HAYDON ROSALIE - HSH | Mare | BROWN | 59517 | 28/08/1979 | Stud Book | Deceased |
| HAYDON ROSARA - HSH | Mare | BROWN | 248895 | 26/10/2017 | Stud Book | Eligible |
| HAYDON ROSE BUD - HSH | Mare | CHESTNUT | F129658 | 22/10/1994 | Foal Recorded | Not Eligible |
| HAYDON ROSE BUSH - HSH | Mare | BROWN | 137014 | 30/11/1996 | Stud Book | Not Eligible |
| HAYDON ROSE JEWEL - HSH | Mare | BLACK | 197750 | 03/10/2011 | Stud Book | Not Eligible |
| HAYDON ROSEANNA - HSH | Mare | BROWN | 100008 | 28/08/1985 | Stud Book | Not Eligible |
| HAYDON ROSEBOWL - HSH | Mare | CHESTNUT | 162296 | 08/08/2001 | Stud Book | Deceased |
| HAYDON ROSECUP - HSH | Mare | BROWN | 162297 | 06/11/2001 | Stud Book | Deceased |
| HAYDON ROSEDROP - HSH | Mare | BROWN | 137017 | 16/01/1997 | Stud Book | Eligible |
| HAYDON ROSEINDA - HSH | Mare | BLACK | 115440 | 04/02/1990 | Stud Book | Not Eligible |
| HAYDON ROSELEAF - HSH | Mare | BAY | 191260 | 08/10/2009 | Stud Book | Eligible |
| HAYDON ROSELLA - HSH | Mare | BAY | F123046 | 20/09/1992 | Foal Recorded | Not Eligible |
| HAYDON ROSETTE - HSH | Mare | BAY | 111838 | 07/10/1988 | Stud Book | Deceased |
| HAYDON ROULETTE - HSH | Stallion | BROWN | 139511 | 09/11/1997 | Stud Book | Eligible |
| HAYDON RUBY - HSH | Mare | CHESTNUT | 146463 | 04/10/1998 | Stud Book | Eligible |
| HAYDON RUBY - HSH | Mare | BROWN | 875 | 01/08/1965 | Stud Book | Deceased |
| HAYDON RUBY II - HSH | Mare | CHESTNUT | 153273 | 14/10/1999 | Stud Book | Deceased |
| HAYDON RUBY TUESDAY - HSH | Mare | BAY | 191261 | 01/09/2009 | Stud Book | Eligible |
| HAYDON RUDOLPH - HSH | Gelding | BROWN | 129666 | 24/12/1994 | Stud Book | Not Eligible |
| HAYDON RUGOSA - HSH | Mare | BAY/BROWN | 139508 | 03/10/1997 | Stud Book | Deceased |
| HAYDON RUMBA - HSH | Mare | BLACK | 187084 | 08/10/2007 | Stud Book | Eligible |
| HAYDON RUSH - HSH | Stallion | BLACK | 67761 | 09/12/1981 | Stud Book | Deceased |
| HAYDON SABLE - HSH | Mare | BROWN | 100017 | 10/09/1986 | Stud Book | Eligible |
| HAYDON SAFARI - HSH | Gelding | BAY | 177164 | 12/10/2004 | Stud Book | Not Eligible |
| HAYDON SAFFRON JEWEL - HSH | Mare | BAY | 194876 | 24/09/2010 | Stud Book | Eligible |
| HAYDON SAILS | Mare | BAY | 6437 | 01/08/1962 | Stud Book | Deceased |
| HAYDON SALINA - HSH | Mare | BLACK | 111834 | 26/08/1988 | Stud Book | Not Eligible |
| HAYDON SALSA - HSH | Mare | BROWN | 240644 | 28/08/2015 | Stud Book | Not Eligible |
| HAYDON SAMBA - HSH | Mare | BROWN | 240645 | 30/11/2015 | Stud Book | Eligible |