| Vasuki Temporal range: Middle Eocene (Lutetian), ~
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| Select holotype vertebrae of Vasuki | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Family: | †Madtsoiidae |
| Genus: | †Vasuki |
| Species: | †V. indicus
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| Binomial name | |
| †Vasuki indicus | |
Vasuki is an extinct genus of madtsoiid snake from the Middle Eocene Naredi Formation of India. The genus contains a single species, V. indicus, known from several vertebrae. Vasuki has an estimated body length between 10.9–15.2 m (36–50 ft), making it the largest known madtsoiid. The upper bounds of the length estimates would make Vasuki the longest snake ever discovered.