| Lê Ý Tông 黎懿宗 | |
| Emperor of Đại Việt | |
| Full Name: | Lê Duy Thận (黎維祳) |
| Succession: | Emperor of the Revival Lê dynasty |
| Reign: | 1735–1740 |
| Succession1: | Retired Emperor of the Revival Lê dynasty |
| Reign1: | 1740–1758 |
| Father: | Lê Dụ Tông |
| Predecessor: | Lê Thuần Tông |
| Successor: | Lê Hiển Tông |
| Regent: | Trịnh Giang |
| House: | Revival Lê dynasty |
| Era Name: | Vĩnh Hựu (永佑) |
| Era Dates: | 1735–1740 |
| Temple Name: | Ý Tông (懿宗) |
| Posthumous Name: | Ôn Gia Trang Túc Khải Túy Minh Mẫn Khoan Hồng Uyên Duệ Huy Hoàng đế |
| Birth Date: | 29 March 1719 |
| Birth Place: | Đông Kinh, Đại Việt |
| Death Date: | 10 August 1759 |
| Death Place: | Đông Kinh, Đại Việt |
| Place Of Burial: | Phù Lê Tomb |
Lê Ý Tông (黎懿宗 29 March 1719 – 10 August 1759) was the third-last emperor of the Vietnamese Lê dynasty, reigning only nominally under the power of Trịnh Giang of the Trịnh lords. He reigned from 1735 to 1740 and was succeeded by Lê Hiển Tông.