| Diane Coates | |
| Nationality: | British |
| Sport: | Athletics |
| Event: | Javelin throw |
| Birth Date: | 25 June 1932 |
| Birth Place: | Oxford, England |
Diane Coates (born 25 June 1932) is a British athlete. She competed in the women's javelin throw at the 1952 Summer Olympics.[1]