| Yan Durepaire | |
| Yannick Valenti | Sat, 2nd Mar 2024 Ascot Race 9 with Gambler's Gold |
| Yasmin Black | Fri, 1st Dec 2023 Mt Gambier Race 6 with Spencer Gulf |
| Yasmin Maskiell | Wed, 26th Feb 2014 Launceston Race 2 with Hailed |
| Yassy Nishitani | Wed, 24th Apr 2024 Devonport Synthetic Race 1 with Purple Moon |
| Yasutoshi Ikee | Sun, 28th Apr 2024 Kyoto Race 11 with Silver Sonic |
| Yasutoshi Matsunaga | Sun, 28th Apr 2024 Niigata Race 1 with Kichiroku Sakura |
| Yoko Ota | Thu, 15th Feb 2024 Hamilton Race 1 with Mitchells Falls |
| Yoshinori Muto | Sun, 28th Apr 2024 Tokyo Race 1 with Roof Of Heaven |
| Yoshitada Munakata | Sat, 27th Apr 2024 Niigata Race 2 with Daliborka |
| Yoshito Yahagi | Sun, 28th Apr 2024 Kyoto Race 3 with Mozu Seven Key |
| Yoshitomo Shima | Sat, 30th Dec 2023 Moonee Valley Race 3 with After The Impact |
| Yuichi Shikato | Sun, 28th Apr 2024 Niigata Race 5 with Mitchi Smile |
| Yves Seguin | Wed, 21st Sep 2011 Betfair Park Sandown Lakeside Race 1 with Petergabriel |
| Yvonne Day | Thu, 2nd Nov 2023 Gatton Race 4 with Sea Shell Fly |
| Yvonne Forrest | Wed, 18th Jan 2017 Morphettville Parks Race 7 with Annandale Lass |
| Yvonne Harvey | Sat, 27th Apr 2024 Kyneton Race 5 with Cent To War |
| Yvonne Pryor | Wed, 23rd Nov 2011 Ascot Race 8 with Daly Hennessy |
