IRON GRAY c. 2003
KNOW HEIGHTS (IRE) - NEDJED (BRZ), by KUBLAI KHAN (ARG)

IRON RULER (USA) c. 1965
NEVER BEND (USA) - OBEDIENT (USA), by MAHMOUD (FR)

IRONIA (BRZ) f. 1964
COARAZE (FR) - BRIGITTE (BRZ) , by BLACKAMOOR (ARG)

IRONICALLY (USA) f. 1960
INTENT (USA) - ITSABET (USA), by HELIOPOLIS (GB)

IRONIE (BRZ) f. 2003
KNOW HEIGHTS (IRE) - ALTESSE CHERIE (BRZ), by CLACKSON (BRZ)

IRRADIATE (USA) f. 1966
RIBOT (ITY) - HIGH VOLTAGE (USA), by AMBIORIX (FR)

IRREMEDIABLE (ARG) f. 1972
ARIO (ARG) - HUYDA (ARG), by HUY (ARG)

IRRISION (ARG) f. 1914
VAL D'OR (FR) - MELTONA (GB), by MELTON (GB)

IRULE (USA) f. 1968
YOUNG EMPEROR (GB) - IAROUND (USA), by ROUND TABLE (USA)

IRVING (BRZ) c. 2000
BEYTON (USA) - SEA WORLD (BRZ), by MIDNIGHT TIGER (USA)