2012 Zomer Olympische Spelen - Atleten
| Atleet | Sport |
|---|---|
 Pui Yin Yip | Badminton |
 Shao Yiwen | Aquatics |
| Wu Yiwen | Aquatics |
 Marjo Yli-Kiikka | Schieten |
| Johanna Ylinen | Judo |
 Inna Yoffe | Aquatics |
 Tony Yoka | Boksen |
 Masato Yokota | Athletiek |
 Jong Yon Hui | Aquatics |
| Tatsuhiro Yonemitsu | Worstelen |
| Lu Yong | Gewichtheffen |
| Jo Yong Suk | Schieten |
 Lee Yong-Dae | Badminton |
| Cho Yong-Seong | Schieten |
| Wei Yongli | Athletiek |
| Kim Yoo-Suk | Athletiek |
| Na Yoon-Kyung | Schieten |
| Kurumi Yoshida | Aquatics |
| Yugo Yoshida | Zeilen |
| Ai Yoshida | Zeilen |
| Saori Yoshida | Worstelen |
| Mika Yoshikawa | Athletiek |
 Lyudmyla Yosypenko | Athletiek |
 Donald Young | Tennis |
| Isiah Young | Athletiek |