| Ý Yên District | |
| Settlement Type: | District |
| Native Name: | Huyện Ý Yên |
| Pushpin Map: | Vietnam#Southeast Asia#Asia |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Red River Delta |
| Subdivision Type2: | Province |
| Subdivision Name2: | Nam Định |
| Seat Type: | Capital |
| Seat: | Lâm |
| Unit Pref: | Imperial |
| Area Total Km2: | 240 |
| Population As Of: | 2003 |
| Population Total: | 241,689 |
| Timezone: | Indochina Time |
| Utc Offset: | +7 |
Ý Yên is a rural district of Nam Định province in the Red River Delta region of Vietnam. As of 2003 the district had a population of 241,689.[1] The district covers an area of 240 km². The district capital lies at Lâm.[1]