King Ding of Zhou (ch: 周定王, pinyin zhōu dìng wáng) or King Ting of Chou (wg) was the twenty-first sovereign of the Chinese Zhou Dynasty and the ninth of Eastern Zhou Dynasty.
| family name | Ji (姬 jī) in Chinese |
| given name | Yu (瑜 yú) in Chinese |
| era name | none |
| father | King Qing of Zhou |
| mother | unknown |
| wife | unknown |
| children | unknown |
| duration of reign | 606 BC-586 BC |
| tomb | unknown |
| temple name | unknown |
| courtesy name | unknown |
| posthumous name | 定 (pinyin kūang), literary meaning: "determined" |
| Preceded by: King Kuang of Zhou |
Zhou Dynasty | Succeeded by: King Jian of Zhou |