| Oisin | Bunbury,
06-Jul-25 |
| Oissel | Strasbourg,
08-May-25 |
| Oitekanaide | Ohi,
27-Jun-23 |
| Oitentinha | Dundalk,
19-Dec-24 |
| Oj Lifestyle | Brighton,
16-Oct-25 |
| Ojai | Rosehill Gardens,
23-Sep-23 |
| Ojas | Fairview,
27-Jan-23 |
| Ojd Going Critical | Los Alamitos Racecourse,
26-Oct-25 |
| Oji | Funabashi,
03-Nov-25 |
| Ojin | Colonial Downs,
14-Sep-25 |
| Ojitos | Will Rogers Downs,
01-Apr-25 |
| Ojitos Bellos | Laurel Park,
28-Apr-24 |
| Ojitos De Aceituna | Club Hipico Santiago,
07-Nov-23 |
| Ojo | Nagoya,
18-Aug-25 |
| Ojo Caprichoso | San Isidro,
18-Jul-24 |
| Ojo Carretto | San Isidro,
21-Nov-24 |
| Ojo Con Este | San Isidro,
29-Jun-23 |
| Ojo Con Estirpe | Palermo,
18-Jun-23 |
| Ojo Curioso | San Isidro,
07-Mar-24 |
| Ojo De Halcon | Club Hipico Santiago,
01-Mar-25 |
| Ojo Del Milagro | Monterrico,
12-Feb-23 |
| Ojo Fiestero | Palermo,
13-Jun-23 |
| Ojo Francisquito | San Isidro,
06-Jul-23 |
| Ojo Mojado | San Isidro,
02-Sep-23 |
| Ojo Salvaje | San Isidro,
26-May-23 |
| Ojos Atorrante | San Isidro,
17-Oct-24 |
| Ojos Remoteros | San Isidro,
02-Nov-23 |
| Ojosan | Donald,
21-Jul-23 |
| Ojw Legacy | Dundalk,
09-Nov-24 |
| Ok Boomer | Senonnes-Pouance,
05-Jul-23 |
| Ok Boomer | Tampa Bay Downs,
25-Dec-24 |
| Ok By Me | Delaware Park,
09-Oct-25 |
| Ok Chianti | Kasamatsu,
12-Jun-23 |
| Ok Dream | Busan,
28-Apr-24 |
| Ok Emily | Mountaineer,
28-Nov-23 |
| Ok Gerry | Morphettville Parks,
10-Oct-25 |
| Ok Honey | Belmont At The Big A,
25-Sep-23 |
| Ok One More | Toowoomba,
18-Oct-25 |
| Ok Pal | Southwell,
31-Mar-24 |
| Ok Speedy | Woodbine,
09-Nov-24 |
| Ok Star | Busan,
14-Jan-24 |
| Ok Then | Ballina,
28-Nov-24 |
| Okacha | Toulouse,
12-Oct-24 |
| Okagesan | Niigata,
26-Jul-25 |
| Okahu Bay | Morphettville,
07-May-16 |
| Okaidi | Chepstow,
20-Jul-23 |
| Okalani | Doomben,
25-Jan-23 |
| Okaloosa | Saratoga,
22-Jul-24 |
| Okaman | Port Augusta,
11-May-14 |
| Okameno Koi | Hakodate,
20-Jul-25 |
| Okami | Lingfield,
31-Aug-25 |
| Okami Miss | Wagga,
24-Jul-23 |
| Okami Star | Kensington,
13-Aug-25 |
| Okammo Shacho | Mombetsu,
23-Sep-25 |
| Okano Lily | Sonoda,
22-Apr-25 |
| Okano Louise | Kasamatsu,
05-Nov-25 |
| Okano Storm | Kasamatsu,
04-Nov-25 |
| Okano Tiara | Mombetsu,
30-Oct-25 |
| Okanui | Toowoomba,
13-Sep-25 |
| Okapina's Light | ParisLongchamp,
13-Jun-25 |