The list below shows the leading Thoroughbred sire of racehorses in Japan for each year since 1924. This is determined by the amount of prize money won by the sire's progeny during the season. The current leading sire in Japan is Kizuna.
The following sire-lines have produced champion sires (1924–2023). • Darley Arabian - 24 stallion, 89 leadings. All titles since 1985. • Byerley Turk – 2 stallions, 8 championships, most recently Partholon in 1984. • Godolphin Arabian – 1 stallion, 1 championship, most recently Chapel Brampton in 1930. {{Tree chart| | |HB| | ==See also==