| | YASEMIN S | 1956 | 1994 |
| | YASMEEN | 1957 | 1972 |
| | YASMINE | 1964 | 1974 |
| | YAYEYAMA MARU | 1872 | 1896 |
| | YEHYA | 1972 | 1990 |
| | YEKTA | 1880 | 1930 |
| | YELLOW RIVER II | 1955 | 1979 |
| | YELLOW STAR | 1974 | 1995 |
| | YELLOW STAR I | 1956 | 1974 |
| | YEMEN PIONEER | 1981 | 1981 |
| | YEMEN PRIDE | 1981 | 1981 |
| | YENBO | 1961 | 1986 |
| | YENI MESSERET | 1920 | 1959 |
| | YERIMU | 1969 | 1987 |
| | YEROTSAKOS | 1966 | 1981 |
| | YGOM | 1913 | 1967 |
| | YIANNIS DIMAKIS | 1949 | 1968 |
| | YIH HSING | 1919 | 1935 |
| | YILDUM | 1914 | 1914 |
| | YILDUN | 1950 | 1963 |
| | YITROS | 1967 | 1998 |
| | YLLOS | 1954 | 1977 |
| | YOGYAKARTA | 1960 | 1976 |
| | YOHANA | 1979 | 1996 |
| | YOKAMU | 1961 | 1981 |
| | YOLAC MERVE | 1914 | 1957 |
| | YOLANDA | 1978 | 1978 |
| | YOLYOL | 1966 | 1988 |